Cita APA (7th ed.)

Hardy, A. C. (1959). The open sea: Its natural history. Collins.

Cita Chicago (17th ed.)

Hardy, Alister Clavering. The Open Sea: Its Natural History. Londres: Collins, 1959.

Cita MLA (9th ed.)

Hardy, Alister Clavering. The Open Sea: Its Natural History. Collins, 1959.