APA (7th ed.) Citation

Smith, T. T., & Keller, D. W. (2018). The old army in the Big Bend of Texas: The last cavalry frontier, 1911-1921. Texas State Historical Association.

Chicago Style (17th ed.) Citation

Smith, Thomas T., and David W. Keller. The Old Army in the Big Bend of Texas: The Last Cavalry Frontier, 1911-1921. Austin: Texas State Historical Association, 2018.

MLA (9th ed.) Citation

Smith, Thomas T., and David W. Keller. The Old Army in the Big Bend of Texas: The Last Cavalry Frontier, 1911-1921. Texas State Historical Association, 2018.