Kandel, I. L. (1917). Federal aid for vocational education: A report to the Carnegie Foundation for the advancement of teaching. [s.n..
Chicago-referens (17:e uppl.)Kandel, Isaac Leon. Federal Aid for Vocational Education: A Report to the Carnegie Foundation for the Advancement of Teaching. New York City: [s.n., 1917.
MLA-referens (8:e uppl.)Kandel, Isaac Leon. Federal Aid for Vocational Education: A Report to the Carnegie Foundation for the Advancement of Teaching. [s.n., 1917.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.