Clark, R. (1997). Marine pollution (4th ed.). Oxford University.
Chicago Style aipamenaClark, R.B. Marine Pollution. 4th ed. New York: Oxford University, 1997.
MLA aipamenaClark, R.B. Marine Pollution. 4th ed. Oxford University, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.