Ulich, R. (1954). Three thousand years of educational wisdom: Selections from great documents. Harvard University.
Chicago-referens (17:e uppl.)Ulich, Robert. Three Thousand Years of Educational Wisdom: Selections from Great Documents. London: Harvard University, 1954.
MLA-referens (9:e uppl.)Ulich, Robert. Three Thousand Years of Educational Wisdom: Selections from Great Documents. Harvard University, 1954.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.