APA-referens (7:e uppl.)

Diederich, M. D. (1931). Vergil in the works of St. Ambrose. Catholic University of America.

Chicago-referens (17:e uppl.)

Diederich, Mary Dorothea. Vergil in the Works of St. Ambrose. Washington, D.C.: Catholic University of America, 1931.

MLA-referens (9:e uppl.)

Diederich, Mary Dorothea. Vergil in the Works of St. Ambrose. Catholic University of America, 1931.