Cita APA (7th ed.)

Wainwright, G. R. (2000). Tricky business letters: Persuasive tactics on paper. Prentice Hall.

Cita Chicago (17th ed.)

Wainwright, Gordon Ray. Tricky Business Letters: Persuasive Tactics on Paper. London: Prentice Hall, 2000.

Cita MLA (9th ed.)

Wainwright, Gordon Ray. Tricky Business Letters: Persuasive Tactics on Paper. Prentice Hall, 2000.