K.S.B. Ryholt: The Political Situation in Egypt during the Second Intermediate Period, c.1800–1550 BC, Carsten Niebuhr Institute Publications, vol. 20. Copenhagen: Museum Tusculanum Press, 1997, excerpts available online here.
unz.org
Percy E. 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, A. Constable and Co., ltd. in Luân Đôn, 1906, available online, see p. 124 and pl. X, num. 28.
