Cita APA (7th ed.)

Jurek, D., & MacDonald, S. (1989). Discovering the world: Biological science. DLM.

Cita Chicago (17th ed.)

Jurek, Dianne, i Sharon MacDonald. Discovering the World: Biological Science. Texas: DLM, 1989.

Cita MLA (9th ed.)

Jurek, Dianne, i Sharon MacDonald. Discovering the World: Biological Science. DLM, 1989.