Não informado. (1972). Hungarian Library and Information Science Abstracts. National Széchényi Library, Centre for Library Science and Methodology.
Chicago-referens (17:e uppl.)Não informado. Hungarian Library and Information Science Abstracts. Budapest: National Széchényi Library, Centre for Library Science and Methodology, 1972.
MLA-referens (8:e uppl.)Não informado. Hungarian Library and Information Science Abstracts. National Széchényi Library, Centre for Library Science and Methodology, 1972.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.