Aleister Crowley: The Beast in Berlin: Art, Sex, and Magick in the Weimar Republic, Tobias Churton, ed. Simon and Schuster, anno 2014, Google books
Equestrian Rebels: Critical Perspectives on Mariano Azuela and the Novel of the Mexican Revolution, pag. 289; Roberto CantĂș, Cambridge Scholars Publishing, 2016, Google books