Jeffries, M., & Mills, D. (1992). Freshwater ecology principles and applications. CBS.
Lua i Stíl Chicago (17ú heag.)Jeffries, Michael, agus Derek Mills. Freshwater Ecology Principles and Applications. New Delhi: CBS, 1992.
Lua MLA (9ú heag.)Jeffries, Michael, agus Derek Mills. Freshwater Ecology Principles and Applications. CBS, 1992.
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