Não informado. (1948). Columbia Engineering Quarterly. Columbia University, Faculty of Engineering, School of Engineering.
Chicago-referens (17:e uppl.)Não informado. Columbia Engineering Quarterly. New York: Columbia University, Faculty of Engineering, School of Engineering, 1948.
MLA-referens (8:e uppl.)Não informado. Columbia Engineering Quarterly. Columbia University, Faculty of Engineering, School of Engineering, 1948.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.