APA (7th ed.) Citation

Smithsonian Institution. Office of the Secretary & Berry, E. W. (1930). Past climate of north polar region. [publisher not identified].

Chicago Style (17th ed.) Citation

Smithsonian Institution. Office of the Secretary and Edward Wilber Berry. Past Climate of North Polar Region. Washington, D.C.: [publisher not identified], 1930.

MLA (9th ed.) Citation

Smithsonian Institution. Office of the Secretary and Edward Wilber Berry. Past Climate of North Polar Region. [publisher not identified], 1930.