एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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