APA (7th ed.) Citation

Hanson, H. C. (1924). A study of the vegetation of northeastern Arizona. [publisher not identified].

Chicago Style (17th ed.) Citation

Hanson, Herbert C. A Study of the Vegetation of Northeastern Arizona. [Lincoln, Neb.]: [publisher not identified], 1924.

MLA (9th ed.) Citation

Hanson, Herbert C. A Study of the Vegetation of Northeastern Arizona. [publisher not identified], 1924.