Unesco, Ryding, S., & Rast, W. (1989). The Control of euthrophication of lakes and reservoirs. Published by Unesco and Parthenon.
Lua i Stíl Chicago (17ú heag.)Unesco, Sven-Olof Ryding, agus Walter Rast. The Control of Euthrophication of Lakes and Reservoirs. Paris and UK: Published by Unesco and Parthenon, 1989.
Lua MLA (9ú heag.)Unesco, et al. The Control of Euthrophication of Lakes and Reservoirs. Published by Unesco and Parthenon, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.