APA (7th ed.) Citation

Matthes, F., & Fryxell, F. (1950). The incomparable valley: A geologic interpretation of the Yosemite. University of California Press.

Chicago Style (17th ed.) Citation

Matthes, Francois, and Fritiof Fryxell. The Incomparable Valley: A Geologic Interpretation of the Yosemite. Berkeley: University of California Press, 1950.

MLA (9th ed.) Citation

Matthes, Francois, and Fritiof Fryxell. The Incomparable Valley: A Geologic Interpretation of the Yosemite. University of California Press, 1950.