Peter Clayton: Chronicle of the Pharaohs, Thames & Hudson Ltd, second printing edition 1994, ISBN 978-0500050743, online, p. 70
Thomas Schneider in Erik Hornung, Rolf Krauss and David A. Warburton (editors): Ancient Egyptian Chronology, Handbook of Oriental Studies, Brill 2012, ISBN 978-90-04-11385-5, online, p. 491
books.google.com
Nigel C. Strudwick, Ronald J. Leprohon ed.: Texts from the Pyramid Age, pp.345-347, online
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, 1978, pp.136-138, online
The fragments of the decrees on the catalog of the MET: fragment 1, 2 and 3.