APA (7e ed.) Bronvermelding
Leedy, P. D. (1993). Practical research: Planning and design (5th ed.). Prentice Hall.
Chicago (17e ed.) Bronvermelding
Leedy, Paul D. Practical Research: Planning and Design. 5th ed. New Jersey: Prentice Hall, 1993.
MLA (9e ed.) Bronvermelding
Leedy, Paul D. Practical Research: Planning and Design. 5th ed. Prentice Hall, 1993.
Let op: Deze citaties zijn niet altijd 100% accuraat.