Coba jelasin Fonologi dari Bahasa Koptik dong

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Greenberg, Joseph H (originally published 1962). The interpretation of the Coptic vowel system. In: On language: selected writings of Joseph H. Greenberg. Eds: K Denning & S Kemmer. Stanford: Stanford University Press, 1990: 428-438

Loprieno, Antonio. 1997. "Egyptian and Coptic Phonology". In Phonologies of Asia and Africa (Including the Caucasus), edited by Alan S. Kaye. Vol. 1 of 2 vols. Winona Lake: Eisenbrauns. 431–460.

Peust, Carsten. 1999. Egyptian Phonology: An Introduction to the Phonology of a Dead Language. (Monographien zur ägyptischen Sprache; 2). Göttingen: Peust & Gutschmidt.