Cerna, David. Notes on the Newer Remedies: Their Therapeutic Applications and Modes of Administration, Second Edition, Book, 1894; digital images, (http://texashistory.unt.edu/ark:/67531/metapth143542/ : accessed May 23, 2013), University of North Texas Libraries, The Portal to Texas History, http://texashistory.unt.edu; crediting University of Texas Health Science Center Libraries , San Antonio, Texas.
