Não informado. (1939). College English. National Council of Teachers of English.
Chicago-referens (17:e uppl.)Não informado. College English. Urbana, Ill: National Council of Teachers of English, 1939.
MLA-referens (8:e uppl.)Não informado. College English. National Council of Teachers of English, 1939.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.