APA (7th ed.) Citation

Christiansen, F. B., & Fenchel, T. M. (1977). Measuring selection in natural populations. Springer-Verlag.

Chicago Style (17th ed.) Citation

Christiansen, F. B., and T. M. Fenchel. Measuring Selection in Natural Populations. Berlín: Springer-Verlag, 1977.

MLA (9th ed.) Citation

Christiansen, F. B., and T. M. Fenchel. Measuring Selection in Natural Populations. Springer-Verlag, 1977.