Cita APA (7th ed.)

Cedar, P. A. (1980). 7 keys to maximum communication. Tyndale.

Cita Chicago (17th ed.)

Cedar, Paula A. 7 Keys to Maximum Communication. Illinois: Tyndale, 1980.

Cita MLA (9th ed.)

Cedar, Paula A. 7 Keys to Maximum Communication. Tyndale, 1980.