APA (7th ed.) Citation

Hay, M. S., & Hodgkiss, I. J. (1981). Hong Kong freshwater fishes. The Urban Council.

Chicago Style (17th ed.) Citation

Hay, Man Shek, and I. J. Hodgkiss. Hong Kong Freshwater Fishes. Hong Kong: The Urban Council, 1981.

MLA (8th ed.) Citation

Hay, Man Shek, and I. J. Hodgkiss. Hong Kong Freshwater Fishes. The Urban Council, 1981.