Texas Register Volume 16, Number 1, January 1, 1991
Office of the Secretary of State. Texas Register Volume 16, Number 1, January 1, 1991, Text, January 1, 1991; digital images, (http://texashistory.unt.edu/ark:/67531/metapth3405 : accessed November 22, 2009), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting University of North Texas Libraries, Denton, Texas.