Não informado. (1950). Education Today: Journal of the college of preceptors. College of Preceptores.
Chicago-referens (17:e uppl.)Não informado. Education Today: Journal of the College of Preceptors. London: College of Preceptores, 1950.
MLA-referens (8:e uppl.)Não informado. Education Today: Journal of the College of Preceptors. College of Preceptores, 1950.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.