Duke, C. S., & Frantz, J. B. (1961). 6,000 miles of fence: Life on the XIT Ranch of Texas. University of Texas Press.

Duke, Cordia Sloan, and Joe Bertram Frantz. 6,000 Miles of Fence: Life on the XIT Ranch of Texas. Austin: University of Texas Press, 1961.

Duke, Cordia Sloan, and Joe Bertram Frantz. 6,000 Miles of Fence: Life on the XIT Ranch of Texas. University of Texas Press, 1961.