@book{133223,
	author = {Saad, Zaki Yusef. and Autry, J. Frank,},
	title = {The excavations at Helwan :},
	publisher = {University of Oklahoma Press,},
	year = {1969.},
	address = {Norman :},
	edition = {1st ed.},
	note = {Based on the author's al-Ḥafāʾir al-malakīyah bi-Ḥulwān. (Cairo, 1952)}
}