APA (7th ed.) Citation

Ruttner, F., Frey, D., & Fry, F. (1968). Fundamentals of limnology (3rd ed. [repr.].). University of Toronto Press.

Chicago Style (17th ed.) Citation

Ruttner, Franz, D.G Frey, and F.E.J Fry. Fundamentals of Limnology. 3rd ed. [repr.]. Toronto: University of Toronto Press, 1968.

MLA (9th ed.) Citation

Ruttner, Franz, et al. Fundamentals of Limnology. 3rd ed. [repr.]. University of Toronto Press, 1968.