APA (7th ed.) Citation

Leedy, P. D., & Ormrod, J. E. (2010). Practical research: Planing and design (Novena edición.). Pearson.

Chicago Style (17th ed.) Citation

Leedy, Paul D., and Jeanne Ellis Ormrod. Practical Research: Planing and Design. Novena edición. Boston: Pearson, 2010.

MLA (8th ed.) Citation

Leedy, Paul D., and Jeanne Ellis Ormrod. Practical Research: Planing and Design. Novena edición. Pearson, 2010.