APA-referens (7:e uppl.)

Harper, M. M. Versions of History and Brother to Dragons: Margaret Mills Harper. Robert Penn Warren's "Brother to Dragons" : a discussion.(1983).

Chicago-referens (17:e uppl.)

Harper, Margaret Mills. "Versions of History and Brother to Dragons: Margaret Mills Harper." Robert Penn Warren's "Brother to Dragons" : A Discussion.(1983) .

MLA-referens (8:e uppl.)

Harper, Margaret Mills. "Versions of History and Brother to Dragons: Margaret Mills Harper." Robert Penn Warren's "Brother to Dragons" : A Discussion.(1983), .