APA stil citiranja

Leedy, P. D., & Ormrod, J. E. (2001). Practical research: Practical research : planning and design (7th ed.). Columbus, Ohio ; Upper Saddle River, N.J.: Merrill Prentice Hall.

Chicago stil citiranja

Leedy, Paul D., and Jeanne Ellis Ormrod. Practical research: Practical research : planning and design. 7th ed. Columbus, Ohio ; Upper Saddle River, N.J.: Merrill Prentice Hall, 2001.

MLA stil citiranja

Leedy, Paul D., and Jeanne Ellis Ormrod. Practical research: Practical research : planning and design. 7th ed. Columbus, Ohio ; Upper Saddle River, N.J.: Merrill Prentice Hall, 2001.