Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL "山形, 孝夫 and Mattá al-Miskīn",Coptic monasteries at Wadi al Natrun in Egypt : from the field notes on the Coptic monks' life,,Institute for the Study of Languages and Cultures of Asia and Africa,1983,Studia culturae Islamicae,,,,https://cir.nii.ac.jp/crid/1130000795577074048