Mary Hartley este autoarea a numeroase carti, cursuri si seminarii in domeniul comunicarii si al dezvoltarii personale. Dintre lucrarile publicate, mentionam: Anger Management (The Chalkface Project, 2000), Managing Anger at Work (Sheldon Press, 2002), The Good Stress Guide (Sheldon Press, 2003) si Stress at Work: A Workbook to Help You Take Control of Work-Related Stress (Intl Pub Marketing, 2003).