Cita APA (7th ed.)

Mason, C. F. (1981). Biology of freshwater pollution. Longman Group Limited.

Cita Chicago (17th ed.)

Mason, C. F. Biology of Freshwater Pollution. New York: Longman Group Limited, 1981.

Cita MLA (9th ed.)

Mason, C. F. Biology of Freshwater Pollution. Longman Group Limited, 1981.