LEIGH DAVID. (1998). ENCYCLOPAEDIA OF PRACTICAL MANAGEMENT TRAINING: GROUPS TRAINING. JAICO PUBLISHING HOUSE.
Chicago-referens (17:e uppl.)LEIGH DAVID. ENCYCLOPAEDIA OF PRACTICAL MANAGEMENT TRAINING: GROUPS TRAINING. NEW DELHI: JAICO PUBLISHING HOUSE, 1998.
MLA-referens (9:e uppl.)LEIGH DAVID. ENCYCLOPAEDIA OF PRACTICAL MANAGEMENT TRAINING: GROUPS TRAINING. JAICO PUBLISHING HOUSE, 1998.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.