O'Brien, N. P. (2000). Education: A Guide to Reference and Information Sources. Second Edition. Reference Sources in the Social Sciences Series.
Chicago-Zitierstil (17. Ausg.)O'Brien, Nancy Patricia. Education: A Guide to Reference and Information Sources. Second Edition. Reference Sources in the Social Sciences Series. 2000.
MLA-Zitierstil (9. Ausg.)O'Brien, Nancy Patricia. Education: A Guide to Reference and Information Sources. Second Edition. Reference Sources in the Social Sciences Series. 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.