Wise, Matthew R.; Kalaswad, Sanjeev & Meyer, John E. Pecos Valley Aquifer, West Texas: Structure and Brackish Groundwater, report, June 2012; (https://texashistory.unt.edu/ark:/67531/metapth281749/m1/1/: accessed May 21, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .