APA (7th ed.) Citation

Writers' Program (N.Y.). (1940). New York, a guide to the Empire state. Oxford university press.

Chicago Style (17th ed.) Citation

Writers' Program (N.Y.). New York, a Guide to the Empire State. New York: Oxford university press, 1940.

MLA (9th ed.) Citation

Writers' Program (N.Y.). New York, a Guide to the Empire State. Oxford university press, 1940.