Citazione APA

Alexander, W. B. (1955). Birds of the ocean: A handbook for voyagers (2.).

Stile di citazione Chicago

Alexander, W B. Birds of the Ocean: A Handbook for Voyagers. 2. Putnam, London, 1955.

Citazione MLA

Alexander, W B. Birds of the Ocean: A Handbook for Voyagers. 2. 1955.