Não informado. (1912). Proceedings of the Annual Convention of the American Railway Engineering Association. American Railway Engineering Association.
Chicago-referens (17:e uppl.)Não informado. Proceedings of the Annual Convention of the American Railway Engineering Association. Chicago, Ill: American Railway Engineering Association, 1912.
MLA-referens (8:e uppl.)Não informado. Proceedings of the Annual Convention of the American Railway Engineering Association. American Railway Engineering Association, 1912.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.