Não informado. (1972). Hungarian Library and Information Science Abstracts. National Széchényi Library, Centre for Library Science and Methodology.
Chicago-Zitierstil (17. Ausg.)Não informado. Hungarian Library and Information Science Abstracts. Budapest: National Széchényi Library, Centre for Library Science and Methodology, 1972.
MLA-Zitierstil (8. Ausg.)Não informado. Hungarian Library and Information Science Abstracts. National Széchényi Library, Centre for Library Science and Methodology, 1972.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.