Cita APA

Ehrenfeld, D. W., & Ehrenfeld, D. W. (1970). Biological conservation. New York, New York: Rinehart and Winston.

Citación estilo Chicago

Ehrenfeld, David W., y David W. Ehrenfeld. Biological Conservation. New York, New York: Rinehart and Winston, 1970.

Cita MLA

Ehrenfeld, David W., y David W. Ehrenfeld. Biological Conservation. New York, New York: Rinehart and Winston, 1970.