Não informado. (1949). The Vocational Aspect of Education. Colleges of Education Technical.
Chicago-Zitierstil (17. Ausg.)Não informado. The Vocational Aspect of Education. London: Colleges of Education Technical, 1949.
MLA-Zitierstil (8. Ausg.)Não informado. The Vocational Aspect of Education. Colleges of Education Technical, 1949.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.