APA (7th ed.) Citation

Drozdeck, S. R. (1991). What they don't teach you in sales 101. McGraw-Hill.

Chicago Style (17th ed.) Citation

Drozdeck, Steven R. What They Don't Teach You in Sales 101. New York: McGraw-Hill, 1991.

MLA (9th ed.) Citation

Drozdeck, Steven R. What They Don't Teach You in Sales 101. McGraw-Hill, 1991.