APA (7th ed.) Citation

Hawkins, A. D. (1981). Aquarium systems. Academic Press.

Chicago Style (17th ed.) Citation

Hawkins, A. D. Aquarium Systems. London: Academic Press, 1981.

MLA (9th ed.) Citation

Hawkins, A. D. Aquarium Systems. Academic Press, 1981.

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