APA (7th ed.) Citation

Paysan, K. (1975). The Hamlyn guide to aquarium fishes. Hamlyn.

Chicago Style (17th ed.) Citation

Paysan, Klaus. The Hamlyn Guide to Aquarium Fishes. London: Hamlyn, 1975.

MLA (9th ed.) Citation

Paysan, Klaus. The Hamlyn Guide to Aquarium Fishes. Hamlyn, 1975.