Não informado. (1900). Proceedings of the Annual Convention of the American Railway Engineering and Maintenance-of-Way Association. American Railway Engineering and Maintenance of Way Association.
Chicago-referens (17:e uppl.)Não informado. Proceedings of the Annual Convention of the American Railway Engineering and Maintenance-of-Way Association. Chicago, Ill: American Railway Engineering and Maintenance of Way Association, 1900.
MLA-referens (8:e uppl.)Não informado. Proceedings of the Annual Convention of the American Railway Engineering and Maintenance-of-Way Association. American Railway Engineering and Maintenance of Way Association, 1900.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.