Exler, F. X. J. (1923). The form of the ancient Greek letter: A study in Greek epistolography. Catholic University of America.
Chicago-referens (17:e uppl.)Exler, Francis Xavier J. The Form of the Ancient Greek Letter: A Study in Greek Epistolography. Washington, D.C.: Catholic University of America, 1923.
MLA-referens (8:e uppl.)Exler, Francis Xavier J. The Form of the Ancient Greek Letter: A Study in Greek Epistolography. Catholic University of America, 1923.
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