APA (7th ed.) Citation

Hardy, A. C. S. (1965). The open sea: Its natural history. Houghton Mifflin.

Chicago Style (17th ed.) Citation

Hardy, Alister Clavering Sir. The Open Sea: Its Natural History. Boston: Houghton Mifflin, 1965.

MLA (9th ed.) Citation

Hardy, Alister Clavering Sir. The Open Sea: Its Natural History. Houghton Mifflin, 1965.