Não informado. (1963). Education abstracts. American College Public Relations Association.
Chicago-Zitierstil (17. Ausg.)Não informado. Education Abstracts. Washington: American College Public Relations Association, 1963.
MLA-Zitierstil (8. Ausg.)Não informado. Education Abstracts. American College Public Relations Association, 1963.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.