^ Charles C. Cumberland, Mexican Revolution: The Constitutionalist Years. Austin: University of Texas Press 1972, p. 166.
^ Lucas, Jeffrey Kent (2010). The Rightward Drift of Mexico's Former Revolutionaries: The Case of Antonio Díaz Soto y Gama. United States: Edwin Mellen Press. p. 296. ISBN 978-0-7734-3665-7.