Ports of Energy: Force Multiplier, Edition 1, pamphlet, 2015~; (https://texashistory.unt.edu/ark:/67531/metapth1364534/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .
Ports of Energy: Force Multiplier, Edition 1, pamphlet, 2015~; (https://texashistory.unt.edu/ark:/67531/metapth1364534/m1/1/: accessed August 15, 2024), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .