APA (7th ed.) Citation

Fry, W. G. (1970). The biology of the porifera. Academic Press.

Chicago Style (17th ed.) Citation

Fry, William G. The Biology of the Porifera. London: Academic Press, 1970.

MLA (9th ed.) Citation

Fry, William G. The Biology of the Porifera. Academic Press, 1970.

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