APA (7th ed.) Citation

Boyce, G. A. (1974). When Navajos had too many sheep: The 1940's. The Indian Historical Press.

Chicago Style (17th ed.) Citation

Boyce, George A. When Navajos Had Too Many Sheep: The 1940's. [San Francisco]: The Indian Historical Press, 1974.

MLA (9th ed.) Citation

Boyce, George A. When Navajos Had Too Many Sheep: The 1940's. The Indian Historical Press, 1974.