APA aipamena

Schefler, W. C. (1976). Biology; principles and issues. Addison-Wesley.

Chicago Style aipamena

Schefler, Wiliam C. Biology; Principles and Issues. Addison-Wesley, 1976.

MLA aipamena

Schefler, Wiliam C. Biology; Principles and Issues. Addison-Wesley, 1976.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.