Παραπομπή σε μορφή APA (7η εκδ.)

ebrary, Inc, Meine, C., & Knight, R. L. (1999). The essential Aldo Leopold: Quotations and commentaries. University of Wisconsin Press.

Παραπομπή σε μορφή Chicago (17η εκδ.)

ebrary, Inc, Curt Meine, και Richard L. Knight. The Essential Aldo Leopold: Quotations and Commentaries. Madison, WI: University of Wisconsin Press, 1999.

Παραπομπή σε μορφή MLA (9th εκδ.)

ebrary, Inc, et al. The Essential Aldo Leopold: Quotations and Commentaries. University of Wisconsin Press, 1999.