Cita APA (7th ed.)

Mader & Sylvia S. (1998). Biology (6th ed.). WCB / McGraw-Hill.

Cita Chicago (17th ed.)

Mader i Sylvia S. Biology. 6th ed. Dubuque, IA: WCB / McGraw-Hill, 1998.

Cita MLA (9th ed.)

Mader i Sylvia S. Biology. 6th ed. WCB / McGraw-Hill, 1998.