APA (7th ed.) Citation

National Academy of Sciences (U.S.). (1940). A brief guide to the Parapet Views, Sinnott Memorial, Crater Lake National Park. The Academy.

Chicago Style (17th ed.) Citation

National Academy of Sciences (U.S.). A Brief Guide to the Parapet Views, Sinnott Memorial, Crater Lake National Park. [Washington]: The Academy, 1940.

MLA (9th ed.) Citation

National Academy of Sciences (U.S.). A Brief Guide to the Parapet Views, Sinnott Memorial, Crater Lake National Park. The Academy, 1940.