Não informado. (1949). The Vocational Aspect of Education. Colleges of Education Technical.
Citação do estilo Chicago (17ª ed.)Não informado. The Vocational Aspect of Education. London: Colleges of Education Technical, 1949.
Citação MLA (8ª ed.)Não informado. The Vocational Aspect of Education. Colleges of Education Technical, 1949.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.