APA (7th ed.) Citation

Ryding, S., & Rast, W. (1989). The control of eutrophication of lakes and reservoirs. Unesco [etc.].

Chicago Style (17th ed.) Citation

Ryding, Sven-Olof, and Walter Rast. The Control of Eutrophication of Lakes and Reservoirs. Paris: Unesco [etc.], 1989.

MLA (9th ed.) Citation

Ryding, Sven-Olof, and Walter Rast. The Control of Eutrophication of Lakes and Reservoirs. Unesco [etc.], 1989.