Não informado. (1977). Informatics Abstracts. All-Union Institute of Scientific and Technical Information.
Chicago-referens (17:e uppl.)Não informado. Informatics Abstracts. Moscow: All-Union Institute of Scientific and Technical Information, 1977.
MLA-referens (8:e uppl.)Não informado. Informatics Abstracts. All-Union Institute of Scientific and Technical Information, 1977.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.