APA aipamena

Campbell, N. A. (1994). Biology: Concepts & connections. Menlo Park, Calif: Benjamin Cummings.

Chicago Style aipamena

Campbell, Neil A. Biology: Concepts & Connections. Menlo Park, Calif: Benjamin Cummings, 1994.

MLA aipamena

Campbell, Neil A. Biology: Concepts & Connections. Menlo Park, Calif: Benjamin Cummings, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.