(1971). Ulrich's international periodicals directory: A classified guide to current periodicals, foreign and domestic (14th ed.). R. R. Bowker.
Chicago-Zitierstil (17. Ausg.)Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. 14th ed. New York: R. R. Bowker, 1971.
MLA-Zitierstil (9. Ausg.)Ulrich's International Periodicals Directory: A Classified Guide to Current Periodicals, Foreign and Domestic. 14th ed. R. R. Bowker, 1971.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.