APA-viite (7. p.)

Harper, D. M. (1992). Eutrophication of freshwaters: Principles, problems and restoration. Chapman and Hall.

Chicago-viite (17. p.)

Harper, David M. Eutrophication of Freshwaters: Principles, Problems and Restoration. Londres: Chapman and Hall, 1992.

MLA-viite (9. p.)

Harper, David M. Eutrophication of Freshwaters: Principles, Problems and Restoration. Chapman and Hall, 1992.

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