Παραπομπή σε μορφή APA (7η εκδ.)

SpringerLink (Online service), Heske, E., Deelen, T. R., & Wydeven, A. P. (2009). Recovery of Gray Wolves in the Great Lakes Region of the United States: An Endangered Species Success Story. Springer New York.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SpringerLink (Online service), Edward Heske, Timothy R. Deelen, και Adrian P. Wydeven. Recovery of Gray Wolves in the Great Lakes Region of the United States: An Endangered Species Success Story. New York, NY: Springer New York, 2009.

Παραπομπή σε μορφή MLA (8th εκδ.)

SpringerLink (Online service), et al. Recovery of Gray Wolves in the Great Lakes Region of the United States: An Endangered Species Success Story. Springer New York, 2009.