APA-referens (7:e uppl.)

KRISHNA, M. (1990). DEVELOPING COMMUNICATION SKILLS. MACMILLAN.

Chicago-referens (17:e uppl.)

KRISHNA, MOHAN. DEVELOPING COMMUNICATION SKILLS. NEW DELHI: MACMILLAN, 1990.

MLA-referens (9:e uppl.)

KRISHNA, MOHAN. DEVELOPING COMMUNICATION SKILLS. MACMILLAN, 1990.