Cita APA (7a ed.)
Turk, J., & Turk, A. (1988). Environmental science (4th ed.). Saunders College Pub..
Cita Chicago Style (17a ed.)
Turk, Jonathan, y Amos Turk. Environmental Science. 4th ed. Philadelphia: Saunders College Pub., 1988.
Cita MLA (9a ed.)
Turk, Jonathan, y Amos Turk. Environmental Science. 4th ed. Saunders College Pub., 1988.
Precaución: Estas citas no son 100% exactas.