APA (7th ed.) Citation

Walker, D. L. (1972). C. L. Sonnichsen: Grassroots historian. Texas Western Press, University of Texas at El Paso.

Chicago Style (17th ed.) Citation

Walker, Dale L. C. L. Sonnichsen: Grassroots Historian. [El Paso]: Texas Western Press, University of Texas at El Paso, 1972.

MLA (9th ed.) Citation

Walker, Dale L. C. L. Sonnichsen: Grassroots Historian. Texas Western Press, University of Texas at El Paso, 1972.