APA aipamena

Leedy, P. D., & Ormrod, J. E. (2001). Practical research (7th edition.). Upper Saddle River, N.J.: Merrill Prentice Hall.

Chicago Style aipamena

Leedy, Paul D., và Jeanne Ellis Ormrod. Practical Research. 7th edition. Upper Saddle River, N.J.: Merrill Prentice Hall, 2001.

MLA aipamena

Leedy, Paul D., và Jeanne Ellis Ormrod. Practical Research. 7th edition. Upper Saddle River, N.J.: Merrill Prentice Hall, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.