Cita APA (7th ed.)

Yorkey, R. (1981). Reply requested: 30 letters of advice. Addison Wesley Publishing Company.

Cita Chicago (17th ed.)

Yorkey, Richard. Reply Requested: 30 Letters of Advice. Reading: Addison Wesley Publishing Company, 1981.

Cita MLA (9th ed.)

Yorkey, Richard. Reply Requested: 30 Letters of Advice. Addison Wesley Publishing Company, 1981.