Balafrej (2012), p. 33 and Parker (2014), p. 86 Balafrej, Lamia (2012). "Saracen or Pisan?". Ars Orientalis. 42: 31–40. JSTOR43489762. Parker, Matthew (2014), "Pisa, Catalonia, and the Muslim Pirates: Intercultural Exchanges in the Balearic Crusade of 1113-1115", Viator, vol. 45, no. 2, pp. 77–100
Quantara (2008); Hoffman (2007), p. 318 "The griffon of Pisa". Quantara. 2008. Archived from the original on March 26, 2012. Retrieved 15 May 2011. Hoffman, Eva R. (2007). "Pathways of Portability: Islamic and Christian Interchange from the Tenth to the Twelfth Century". Late Antique and Medieval Art of the Mediterranean World. Blackwell Publishing. ISBN978-1-4051-2071-5.
Quantara (2008); Contadini, Camber & Northover (2002) sets out this theory "The griffon of Pisa". Quantara. 2008. Archived from the original on March 26, 2012. Retrieved 15 May 2011. Contadini, A.; Camber, R.; Northover, P. (2002). "Beasts that Roared: The Pisa Griffin and the New York Lion". In Ball, W.; Harrow, L. (eds.). Cairo to Kabul: Afghan and Islamic Studies Presented to Ralph Pinder-Wilson. Melisende. pp. 65–83. ISBN9781901764123.
Quantara (2008); Hoffman (2007), p. 318 "The griffon of Pisa". Quantara. 2008. Archived from the original on March 26, 2012. Retrieved 15 May 2011. Hoffman, Eva R. (2007). "Pathways of Portability: Islamic and Christian Interchange from the Tenth to the Twelfth Century". Late Antique and Medieval Art of the Mediterranean World. Blackwell Publishing. ISBN978-1-4051-2071-5.
Quantara (2008); Contadini, Camber & Northover (2002) sets out this theory "The griffon of Pisa". Quantara. 2008. Archived from the original on March 26, 2012. Retrieved 15 May 2011. Contadini, A.; Camber, R.; Northover, P. (2002). "Beasts that Roared: The Pisa Griffin and the New York Lion". In Ball, W.; Harrow, L. (eds.). Cairo to Kabul: Afghan and Islamic Studies Presented to Ralph Pinder-Wilson. Melisende. pp. 65–83. ISBN9781901764123.