Erdem, Mevlüt. “Historical Development of Passives in Turkish”. Turcology in Turkey: Selected Papers, edited by László Károly, vol. Vol. 47, SZTE BTK Institute of Hungarian Language and Literature University of Szeged, 2007, pp. 199–210, https://ebook.ek.szte.hu/index.php/btk-magyarnyelviirodalmi-intezet/catalog/book/223/chapter/421.