APA (7th ed.) Citation

Spellerberg, I. F., & Hardes, S. R. (1992). Biological conservation (1. publ.). Cambridge Univ. Press.

Chicago Style (17th ed.) Citation

Spellerberg, Ian F., and Steven R. Hardes. Biological Conservation. 1. publ. Cambridge u.a: Cambridge Univ. Press, 1992.

MLA (9th ed.) Citation

Spellerberg, Ian F., and Steven R. Hardes. Biological Conservation. 1. publ. Cambridge Univ. Press, 1992.