Curtis, W. H. (1971). Educational resources management system. Research Corp., Association of School Business Officials.
Chicago-referens (17:e uppl.)Curtis, William H. Educational Resources Management System. [Chicago, Illinois]: Research Corp., Association of School Business Officials, 1971.
MLA-referens (9:e uppl.)Curtis, William H. Educational Resources Management System. Research Corp., Association of School Business Officials, 1971.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.