APA-viite (7. p.)

Ehrenfeld, D. W. (1970). Biological conservation. Holt, Rinehart and Winston.

Chicago-viite (17. p.)

Ehrenfeld, David W. Biological Conservation. Nueva York: Holt, Rinehart and Winston, 1970.

MLA-viite (9. p.)

Ehrenfeld, David W. Biological Conservation. Holt, Rinehart and Winston, 1970.