Graaf, C. v. d. (1945). The Dirae: With translation, commentary and an investigation of its authorship. E.J. Brill.
Chicago-referens (17:e uppl.)Graaf, Cornelis van der. The Dirae: With Translation, Commentary and an Investigation of Its Authorship. Leiden: E.J. Brill, 1945.
MLA-referens (8:e uppl.)Graaf, Cornelis van der. The Dirae: With Translation, Commentary and an Investigation of Its Authorship. E.J. Brill, 1945.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.