Drijvers, J. W. (1992). Helena Augusta: The mother of Constantine the Great and the legend of her finding of the true cross. Brill's studies in intellectual history.
Chicago Style (17th ed.) CitationDrijvers, Jan Willem. "Helena Augusta: The Mother of Constantine the Great and the Legend of Her Finding of the True Cross." Brill's Studies in Intellectual History 1992.
MLA (9th ed.) CitationDrijvers, Jan Willem. "Helena Augusta: The Mother of Constantine the Great and the Legend of Her Finding of the True Cross." Brill's Studies in Intellectual History, 1992.
Warning: These citations may not always be 100% accurate.