Unknown creator; St. Louis University; Parks College of Saint Louis University. (1941). Parks College industrial machine shop.
Chicago-referens (17:e uppl.)Unknown creator; St. Louis University; Parks College of Saint Louis University. Parks College Industrial Machine Shop. 1941.
MLA-referens (8:e uppl.)Unknown creator; St. Louis University; Parks College of Saint Louis University. Parks College Industrial Machine Shop. 1941.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.