Brown, A. L. (1971). Ecology of fresh water. Heinemann Educational Book.
Cita Chicago (17th ed.)Brown, Alison Leadley. Ecology of Fresh Water. London: Heinemann Educational Book, 1971.
Cita MLA (9th ed.)Brown, Alison Leadley. Ecology of Fresh Water. Heinemann Educational Book, 1971.
Atenció: Aquestes cites poden no estar 100% correctes.