Lefferts, W. (1924). Our country's leaders: And what they did for America. J.B. Lippincott Co..
Chicago-referens (17:e uppl.)Lefferts, Walter. Our Country's Leaders: And What They Did for America. Philadelphia : Chicago [etc.]: J.B. Lippincott Co., 1924.
MLA-referens (8:e uppl.)Lefferts, Walter. Our Country's Leaders: And What They Did for America. J.B. Lippincott Co., 1924.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.