Não informado. (1971). International journal of continuing education and training. Baywood Publishing.
Chicago-Zitierstil (17. Ausg.)Não informado. International Journal of Continuing Education and Training. Farmingdale, NY: Baywood Publishing, 1971.
MLA-Zitierstil (8. Ausg.)Não informado. International Journal of Continuing Education and Training. Baywood Publishing, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.