APA (7th ed.) Citation

Ruttner, F., Frey, D. G., & Fry, F. E. J. (1975). Fundamentals of limnology (3rd ed.). University of Toronto Press.

Chicago Style (17th ed.) Citation

Ruttner, Franz, D. G. Frey, and F. E. J. Fry. Fundamentals of Limnology. 3rd ed. Toronto: University of Toronto Press, 1975.

MLA (9th ed.) Citation

Ruttner, Franz, et al. Fundamentals of Limnology. 3rd ed. University of Toronto Press, 1975.