APA Edition Citation

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

Chicago Edition Citation

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

MLA Edition Citation

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

Warning: These citations may not always be 100% accurate.