National Association of Railroad and Utilities Commissioners. Annual Convention. (1947). Proceedings. National Association of Railroad and Utilities Commissioners.
Chicago-referens (17:e uppl.)National Association of Railroad and Utilities Commissioners. Annual Convention. Proceedings. Washington, D.C.: National Association of Railroad and Utilities Commissioners, 1947.
MLA-referens (8:e uppl.)National Association of Railroad and Utilities Commissioners. Annual Convention. Proceedings. National Association of Railroad and Utilities Commissioners, 1947.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.