APA (7th ed.) Citation

(1961). Lassen Volcanic National Park. U.S. G.P.O.].

Chicago Style (17th ed.) Citation

Lassen Volcanic National Park. [Washington: U.S. G.P.O.], 1961.

MLA (9th ed.) Citation

Lassen Volcanic National Park. U.S. G.P.O.], 1961.