Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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