Cita APA (7th ed.)

Norstog, K., & Meyerriecks, A. J. (1985). Biology (2nd ed.). Charles E.Merill.

Cita Chicago (17th ed.)

Norstog, Knut, i Andrew J. Meyerriecks. Biology. 2nd ed. Columbus: Charles E.Merill, 1985.

Cita MLA (9th ed.)

Norstog, Knut, i Andrew J. Meyerriecks. Biology. 2nd ed. Charles E.Merill, 1985.