APA aipamena

Russell, R., & Reynolds, F. (1997). Back pain, pregnancy, and childbirth.

Chicago Style aipamena

Russell, R., and F. Reynolds. Back Pain, Pregnancy, and Childbirth. 1997.

MLA aipamena

Russell, R., and F. Reynolds. Back Pain, Pregnancy, and Childbirth. 1997.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.