Texas. Legislature. House of Representatives. 84th Texas Legislature, Regular Session, House Bill 75, Chapter 143, legislative document, May 28, 2015; (https://texashistory.unt.edu/ark:/67531/metapth704865/m1/1/: accessed November 12, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .