Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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