Kimball, J. W. (1983). Biology (6th.ed.). WCB.
Chicago Style (17th ed.) ZitazioaKimball, John W. Biology. 6th.ed. Iowa: WCB, 1983.
MLA (9th ed.) ZitazioaKimball, John W. Biology. 6th.ed. WCB, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.