Ehrenfeld, D. W. (1970). Biological conservation. Holt, Rinehart and Winston.
Chicago Style (17th ed.) CitationEhrenfeld, David W. Biological Conservation. Nueva York: Holt, Rinehart and Winston, 1970.
MLA引文Ehrenfeld, David W. Biological Conservation. Holt, Rinehart and Winston, 1970.
警告:這些引文格式不一定是100%准確.