APA (7th ed.) Citation

Cushing, D. H., & Walsh, J. J. (1976). The ecology of the seas. Blackwell.

Chicago Style (17th ed.) Citation

Cushing, D. H., and John Joseph Walsh. The Ecology of the Seas. Oxford: Blackwell, 1976.

MLA (9th ed.) Citation

Cushing, D. H., and John Joseph Walsh. The Ecology of the Seas. Blackwell, 1976.