APA aipamena

Ritchie, D. A., & Donald A. Ritchie. (2001). The: A student companion. Oxford,New York: Oxford University Press.

Chicago Style aipamena

Ritchie, Donald A., và Donald A. Ritchie. The: A Student Companion. Oxford,New York: Oxford University Press, 2001.

MLA aipamena

Ritchie, Donald A., và Donald A. Ritchie. The: A Student Companion. Oxford,New York: Oxford University Press, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.