APA (7th ed.) Citation

Tepper, R. (1990). The only 250 letters and memos managers will ever need. J. Wiley.

Chicago Style (17th ed.) Citation

Tepper, Ron. The Only 250 Letters and Memos Managers Will Ever Need. New York: J. Wiley, 1990.

MLA (9th ed.) Citation

Tepper, Ron. The Only 250 Letters and Memos Managers Will Ever Need. J. Wiley, 1990.