Παραπομπή APA

Berta, A. (2006). Marine mammals: Evolutionary biology / 11th ed. Elsevier.

Παραπομπή Chicago Style

Berta, Annalisa. Marine Mammals: Evolutionary Biology / 11th Ed. London: Elsevier, 2006.

Παραπομπή MLA

Berta, Annalisa. Marine Mammals: Evolutionary Biology / 11th Ed. Elsevier, 2006.