Cita APA (7th ed.)

Fortes, N. R. (1987). A manual in limnology. College of Fisheries, University of the Philippines in the Visayas.

Cita Chicago (17th ed.)

Fortes, Norma R. A Manual in Limnology. Quezon City: College of Fisheries, University of the Philippines in the Visayas, 1987.

Cita MLA (9th ed.)

Fortes, Norma R. A Manual in Limnology. College of Fisheries, University of the Philippines in the Visayas, 1987.