APA (7th ed.) Citation

Christiansen, F. B., & Fenchel, T. (1977). Theories of populations in biological communities. Springer-Verlag.

Chicago Style (17th ed.) Citation

Christiansen, Freddy B., and Tom Fenchel. Theories of Populations in Biological Communities. Berlin ; New York: Springer-Verlag, 1977.

MLA (9th ed.) Citation

Christiansen, Freddy B., and Tom Fenchel. Theories of Populations in Biological Communities. Springer-Verlag, 1977.