Cita APA (7th ed.)

Fries, W. H. (1974). The double elephant folio: The story of Audubon's Birds of America. American Library Association.

Cita Chicago (17th ed.)

Fries, Waldemar H. The Double Elephant Folio: The Story of Audubon's Birds of America. Chicago: American Library Association, 1974.

Cita MLA (9th ed.)

Fries, Waldemar H. The Double Elephant Folio: The Story of Audubon's Birds of America. American Library Association, 1974.