APA استشهاد

Clark, R. (1997). Marine pollution (4th ed.). Oxford University.

استشهاد بنمط شيكاغو

Clark, R.B. Marine Pollution. 4th ed. New York: Oxford University, 1997.

MLA استشهاد

Clark, R.B. Marine Pollution. 4th ed. Oxford University, 1997.