Cita APA (7a ed.)

Leedy, P. D. (1993). Practical research: Planning and design (5th ed.). MacMillan [etc.].

Cita Chicago Style (17a ed.)

Leedy, Paul D. Practical Research: Planning and Design. 5th ed. New York [etc.]: MacMillan [etc.], 1993.

Cita MLA (9a ed.)

Leedy, Paul D. Practical Research: Planning and Design. 5th ed. MacMillan [etc.], 1993.