2008:

McMahon, G, & Leiman, A, 'Performance Coaching for Dummies', John Wiley & Sons, ISBN 978 0 470 51748 2

2007:

McMahon, G, 'No More Anger! – be your own anger management coach', H Karnac (Books) Ltd. ISBN 978 1 88575 430 0

2006:

McMahon, G, 'How to Make Life Happen: When You're Too Busy to Live', Sheldon Press, ISBN 0-85969-932-3

2005:

McMahon, G, Palmer, S & Wilding, C, 'Achieving Excellence in Your Coaching Practice', Essential Coaching Skills and Knowledge Series, Eds, McMahon, G, Palmer, S, Leimon, A, Routledge, ISBN 1-58391-896-5

2005:

Leimon, A, Moscovici, F, McMahon, G, 'Essential Business Coaching', Routledge, Essential Coaching Skills and Knowledge Series, Eds, McMahon, G, Palmer, S, Leimon, A, Routledge.
ISBN 1-58391-882-5

2005:

McMahon, G, Palmer, S, Wilding, C, 'The Essential Skills for Setting Up a Counselling and Psychotherapy Practice', Routledge. ISBN 0-415-19775-9

2005:

McMahon, G, 'No More Anxiety! – be your own anxiety coach', 
H Karnac (Books) Ltd. ISBN 1-88575-381-2

2003:

Counselling, Bayne, R, Merry, T, McMahon, G, 'Applied Psychology: Current Issues and New Directions', eds, Bayne, R, Horton, I, SAGE Publications, ISBN 0-7619-4150-9

2002:

Palmer, S, Harrison, M, Silkin, L, McMahon, G, Keenan, K, Baldwin, A, Burn, G, Whitten, H, 'Managing Stress in the Workplace', Interactive CD-ROM and Workbook, Croner

2002:

McMahon, G, 'British Association for Counselling and Psychotherapy (BACP) Accreditation' in Bor, R, Palmer, S, (eds) 'A Beginner's Guide to Training in Counselling & Psychotherapy', London: SAGE. ISBN 0-7619-6430-4

2001:

McMahon, G, Confidence Works - learn to be your own Life Coach, Sheldon Press. ISBN 0-85969-689-6

2000:

McMahon, G, Coping With Life's Traumas, Dublin: Newleaf, Gill & MacMillan. ISBN 0 7171 2895 4

2000:

McMahon, G, 'Assessment and Case Formulation', in C. Feltham, I. Horton (eds) Handbook of Counselling and Psychotherapy, London: SAGE. ISBN 0-7619-5687-5

2000:

Curwen. B, Palmer. S, Ruddell. P, 'Brief Cognitive Behaviour Therapy', in S. Palmer, G. McMahon (eds), Brief Therapy Series, London: SAGE, ISBN 0-7619-5800-2

2000:

Mander, G, 'A Psychodynamic Approach to Brief Therapy', in S. Palmer, G. McMahon (eds), Brief Therapy Series, London: SAGE. ISBN 0-7619-6005-8

2000:

McMahon, G, 'Jeans, Jumpers and Clingy Tops', in S. Bovey (ed), Sizeable Reflections, Big Women Living Real Lives, London: The Women's Press. ISBN 0-7043-4587-0

1999:

McMahon, G, 'Integrative Counselling', in S. Palmer (ed), Introduction to Counselling and Psychotherapy, London: SAGE. ISBN 0-7619-5544-5

1999:

Bayne, R, Horton, I, Merry, T, Noyes, E, McMahon, G, The Counsellor's Handbook, (2nd Edition), London: Stanley Thornes Publishers Ltd., ISBN 0-7487-3309-4

1998:

O'Connell, B, 'Solution-Focused Therapy', in S. Palmer & G. McMahon (eds), Brief Therapy Series, London: SAGE Publications. ISBN 0 7619 5275 6

1997:

McMahon, G, Doggart, E, Understanding Trauma, Cambridge: National Extension College. ISBN: 1 85356 721 3

1997:

McMahon, G, 'Counselling in Private Practice' in S. Palmer, G. McMahon (eds), Handbook of Counselling, (2nd edition), London: Routledge. ISBN 0-415-13952-X

1997:

McMahon, G, 'Client History Taking and Associated Administration' in S. Palmer,G. McMahon (eds), Client Assessment, London: SAGE Publications.ISBN 0-8039-7502-3

1996:

McMahon, G, Foreword, Counselling & Psychotherapy Directory, London: Mental Health Media

1996:

McMahon, G, Foreword, Creative Relaxation inn Groupwork, Tubbs, I, Oxon: Winslow Press Ltd. ISBN 0-86388-143-2

1996:

Palmer, S, McMahon, G, Cognitive Coping Strategies, Stress Management Handbook, London: ISMA.

1995:

McMahon, G, Consultant Editor, Working With Problem Drinkers, Ward, M. Guidebooks for Counsellors Series, Rugby: British Association for Counselling and Psychotherapy. ISBN 0 946181 48 9

1994:

McMahon, G, Setting Up Your Own Private Practice - in Counselling and Psychotherapy, Cambridge: National Extension College. ISBN 1 85356 522 9

1993:

McMahon, G, Powell, K, 'Starting Your Own Private Practice', in Dryden, W (ed), Questions and Answers on Counselling in Action, Counselling in Action Series, London: SAGE. 8039 8859-1

1993:

McMahon, G, Consultant Editor, 'Counselling People in Eating Distress', Waskett, C, Guidebooks for Counsellors Series, Rugby: British Association for Counselling and Psychotherapy. ISBN 0-946181- 39- X

1989:

McMahon, G, 'Substance Misuse', in Megranahan, M, Counselling - A Practical Guide for Employers, London: IPD Publications. ISBN 0-85292-397-X

1985:

Originator, Danger - Drugs at Work, London: Turning Point, CBI publications

Articles on a range of subjects for a variety of websites including: BBC Lifestyle, Training Zone, Learning Wire, Association for Coaching on-line Journal, 247 Coaching.com, iVillage, VieLife, Bodyisland.com 


Gladeana is also the Stress Coach for Stress Gym on the Channel 4 Website and on-line Life Coach for the GMTV Website