García-Mercadal y García Loygorri, Fernando. "El escudo grande de Carlos III"(PDF). Emblemata (II (1996)): 249–258. Archived(PDF) from the original on 24 November 2020. Retrieved 10 September 2020.
heraldicahispanica.com
Gavira, Ignacio (2005–2007). "Heraldica Hispánica" [Hispanic Heraldry]. heraldicahispanica.com (in Spanish). Archived from the original on February 27, 2011. Retrieved September 3, 2013.
loc.gov
"Columbus' Coat of Arms". Library of Congress. Archived from the original on April 2, 2015. Retrieved March 18, 2015. This article incorporates text from this source, which is in the public domain.
Gavira, Ignacio (2005–2007). "Heraldica Hispánica" [Hispanic Heraldry]. heraldicahispanica.com (in Spanish). Archived from the original on February 27, 2011. Retrieved September 3, 2013.
"Columbus' Coat of Arms". Library of Congress. Archived from the original on April 2, 2015. Retrieved March 18, 2015. This article incorporates text from this source, which is in the public domain.
García-Mercadal y García Loygorri, Fernando. "El escudo grande de Carlos III"(PDF). Emblemata (II (1996)): 249–258. Archived(PDF) from the original on 24 November 2020. Retrieved 10 September 2020.