↑Loprieno, Antonio (1995) Ancient Egyptian: A Linguistic Introduction, Cambridge: Cambridge University Press, ISBN0-521-44384-9, 页42
↑Loprieno, Antonio (2001) “From Ancient Egyptian to Coptic” in Haspelmath, Martin et al. (eds.), Language Typology and Language Universals. Loprieno cites a slightly earlier form with -/aː/-.