Texas. Legislature. House of Representatives. 83rd Texas Legislature, Regular Session, House Bill 1185, Chapter 904, legislative document, June 14, 2013; (https://texashistory.unt.edu/ark:/67531/metapth438413/m1/1/: accessed December 16, 2018), University of North Texas Libraries, The Portal to Texas History, texashistory.unt.edu; .