Unesco, Ryding, S., & Rast, W. (1989). The Control of euthrophication of lakes and reservoirs. Published by Unesco and Parthenon.
Chicago-referens (17:e uppl.)Unesco, Sven-Olof Ryding, och Walter Rast. The Control of Euthrophication of Lakes and Reservoirs. Paris and UK: Published by Unesco and Parthenon, 1989.
MLA-referens (9:e uppl.)Unesco, et al. The Control of Euthrophication of Lakes and Reservoirs. Published by Unesco and Parthenon, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.