Cita APA (7th ed.)

Potter, D. (1970). Discussion: A guide to effective... (2nd.ed.). Wadsworth.

Cita Chicago (17th ed.)

Potter, David. Discussion: A Guide to Effective... 2nd.ed. California: Wadsworth, 1970.

Cita MLA (9th ed.)

Potter, David. Discussion: A Guide to Effective... 2nd.ed. Wadsworth, 1970.