^Barajas، Rafael (2009). Myth and mitote: the political caricature of Jose Guadalupe Posada and Manuel Alfonso Manila. Fondo de Cultura Economica. ص. 38. ISBN:9786071600752.
^Nick Caistor, Mexico: A Cultural and Literary Companion (Interlink Books, 2000)p115
^Barajas، Rafael (2009). Myth and mitote: the political caricature of Jose Guadalupe Posada and Manuel Alfonso Manila. Fondo de Cultura Economica. ص. 37. ISBN:9786071600752.
