Mader, S. S. (2001). Biology (7th ed.). McGraw-Hill.
Chicago Style aipamenaMader, Sylvia S. Biology. 7th ed. Boston: McGraw-Hill, 2001.
MLA aipamenaMader, Sylvia S. Biology. 7th ed. McGraw-Hill, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.