APA (7th ed.) Citation

Hervey, G. F., & Hems, J. (1973). A guide to freshwater aquarium fishes. Hamlyn Publishing.

Chicago Style (17th ed.) Citation

Hervey, George F., and J. Hems. A Guide to Freshwater Aquarium Fishes. London: Hamlyn Publishing, 1973.

MLA (9th ed.) Citation

Hervey, George F., and J. Hems. A Guide to Freshwater Aquarium Fishes. Hamlyn Publishing, 1973.