Cita APA (7th ed.)

Jackson, J. D. (1989). Biology encounters (3rd.ed.). Burgress International.

Cita Chicago (17th ed.)

Jackson, John D. Biology Encounters. 3rd.ed. Edina: Burgress International, 1989.

Cita MLA (9th ed.)

Jackson, John D. Biology Encounters. 3rd.ed. Burgress International, 1989.