William C. Hayes, The Scepter of Egypt: A Background for the Study of the Egyptian Antiquities in The Metropolitan Museum of Art, vol. 1 : From the Earliest Times to the End of the Middle Kingdom, MetPublications, (lire en ligne), p. 136–138.
Edda Bresciani, Antonio Giammarusti, « Sobek's double temple on the hill of Medinet Madî », Les Dossiers d'archéologie, no 265, , p. 132–140 (lire en ligne).
uchicago.edu
oi.uchicago.edu
William Joseph Murnane, Ancient Egyptian Coregencies, Studies in Ancient Oriental Civilization (SAOC) 40, Chicago, The Oriental Institute, 1977, available online, direct access to pdf
unz.org
See for example seals 22 and 38 p. 113 and 121 and pl. VI and IX in: Percy Newberry, Scarabs: An introduction to the study of Egyptian seals and signet rings, with forty-four plates and one hundred and sixteen illustrations in the text, 1906, available online copyright-free
