APA (7e ed.) Bronvermelding
ebrary, Inc, Meine, C., & Knight, R. L. (1999). The essential Aldo Leopold: Quotations and commentaries. University of Wisconsin Press.
Chicago (17e ed.) Bronvermelding
ebrary, Inc, Curt Meine, en Richard L. Knight. The Essential Aldo Leopold: Quotations and Commentaries. Madison, WI: University of Wisconsin Press, 1999.
MLA (9e ed.) Bronvermelding
ebrary, Inc, et al. The Essential Aldo Leopold: Quotations and Commentaries. University of Wisconsin Press, 1999.
Let op: Deze citaties zijn niet altijd 100% accuraat.