Murtonen, A. (1967). Early Semitic: A diachronical inquiry into the relationship of Ethiopic to the other so-called South-East Semitic languages,. E. J. Brill.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Murtonen, A. Early Semitic: A Diachronical Inquiry into the Relationship of Ethiopic to the Other So-called South-East Semitic Languages,. Leiden: E. J. Brill, 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Murtonen, A. Early Semitic: A Diachronical Inquiry into the Relationship of Ethiopic to the Other So-called South-East Semitic Languages,. E. J. Brill, 1967.
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