APA Citatie

Leedy, P. D. (2015). Practical research: Planning and design. Harlow, Essex: Pearson Education.

Chicago Style citaat

Leedy, Paul D. Practical Research: Planning and Design. Harlow, Essex: Pearson Education, 2015.

MLA citatie

Leedy, Paul D. Practical Research: Planning and Design. Harlow, Essex: Pearson Education, 2015.

Let op: Deze citaties zijn niet altijd 100% accuraat.