Cita APA (7a ed.)

Harper, D. (1992). Eutrophication of freshwaters: Principles, problems and restoration ([1st ed.].). Chapman and Hall.

Cita Chicago Style (17a ed.)

Harper, David. Eutrophication of Freshwaters: Principles, Problems and Restoration. [1st ed.]. London [etc.]: Chapman and Hall, 1992.

Cita MLA (9a ed.)

Harper, David. Eutrophication of Freshwaters: Principles, Problems and Restoration. [1st ed.]. Chapman and Hall, 1992.