Παραπομπή APA

Axelrod, H. R., & Vorderwinkler, W. Colour guide to tropical fish.

Παραπομπή Chicago Style

Axelrod, Herbert R., και William Vorderwinkler. Colour Guide to Tropical Fish.

Παραπομπή MLA

Axelrod, Herbert R., και William Vorderwinkler. Colour Guide to Tropical Fish.