APA (7th ed.) Citation

American Geographical Society of New York. (1944). Map of the Americas (2d ed.). The Society.

Chicago Style (17th ed.) Citation

American Geographical Society of New York. Map of the Americas. 2d ed. New York: The Society, 1944.

MLA (9th ed.) Citation

American Geographical Society of New York. Map of the Americas. 2d ed. The Society, 1944.