APA (7th ed.) Citation

Leedy, P. D., & Ormrod, J. E. (2010). Practical research: Planning and design (9th ed., international ed.). Pearson Education Internat.

Chicago Style (17th ed.) Citation

Leedy, Paul D., and Jeanne Ellis Ormrod. Practical Research: Planning and Design. 9th ed., international ed. Boston: Pearson Education Internat, 2010.

MLA (9th ed.) Citation

Leedy, Paul D., and Jeanne Ellis Ormrod. Practical Research: Planning and Design. 9th ed., international ed. Pearson Education Internat, 2010.