"GIB". The Encyclopædia Britannica, or, Dictionary of arts, sciences, and general literature, Volume 10 (8th ed.). University of Wisconsin, Madison: Adam & Charles Black. 1856. p. 618. Archived from the original on 6 February 2017. Retrieved 22 September 2016.
Benavides, Antonio (1860). "XV". Memorias de Don Fernando IV de Castilla. dos tomos (1ª ed.). Madrid: Imprenta de Don José Rodríguez. p. 223. Archived from the original on 23 April 2017. Retrieved 22 September 2016.
Benavides, Antonio (1860). "XV". Memorias de Don Fernando IV de Castilla. dos tomos (1ª ed.). Madrid: Imprenta de Don José Rodríguez. p. 220. Archived from the original on 23 April 2017. Retrieved 22 September 2016.
Alistair, Ward (2004). "IX". España Britannia: A Bitter-sweet Relationship. dos tomos (ill. ed.). London: Shepheard-Walwyn (Publishers) Ltd. p. 114. ISBN9780856832246.[permanent dead link]
Mann, J. H. (1873). "XVII: The First Siege". A History of Gibraltar and its Sieges (2nd ed.). University of California: Provost. p. 135. Archived from the original on 2 April 2018. Retrieved 9 July 2012.
Mann, J. H. (1873). "XVII: The First Siege". A History of Gibraltar and its Sieges (2nd ed.). University of California: Provost. p. 136. Archived from the original on 2 April 2018. Retrieved 9 July 2012.
Mann, J. H. (1873). "XVII: The First Siege". A History of Gibraltar and its Sieges. in Al-makkari, vol. ii. p. 355. (2nd ed.). University of California: Provost. p. 135. Archived from the original on 2 April 2018. Retrieved 9 July 2012.
"Information Services". History. Government of Gibraltar. Archived from the original on 14 December 2013. Retrieved 9 July 2012.
"GIB". The Encyclopædia Britannica, or, Dictionary of arts, sciences, and general literature, Volume 10 (8th ed.). University of Wisconsin, Madison: Adam & Charles Black. 1856. p. 618. Archived from the original on 6 February 2017. Retrieved 22 September 2016.
Mann, J. H. (1873). "XVII: The First Siege". A History of Gibraltar and its Sieges (2nd ed.). University of California: Provost. p. 135. Archived from the original on 2 April 2018. Retrieved 9 July 2012.
Mann, J. H. (1873). "XVII: The First Siege". A History of Gibraltar and its Sieges (2nd ed.). University of California: Provost. p. 136. Archived from the original on 2 April 2018. Retrieved 9 July 2012.
Benavides, Antonio (1860). "XV". Memorias de Don Fernando IV de Castilla. dos tomos (1ª ed.). Madrid: Imprenta de Don José Rodríguez. p. 223. Archived from the original on 23 April 2017. Retrieved 22 September 2016.
Benavides, Antonio (1860). "XV". Memorias de Don Fernando IV de Castilla. dos tomos (1ª ed.). Madrid: Imprenta de Don José Rodríguez. p. 220. Archived from the original on 23 April 2017. Retrieved 22 September 2016.
Mann, J. H. (1873). "XVII: The First Siege". A History of Gibraltar and its Sieges. in Al-makkari, vol. ii. p. 355. (2nd ed.). University of California: Provost. p. 135. Archived from the original on 2 April 2018. Retrieved 9 July 2012.