Proceedings of the 1971 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control. Association for Computing Machinery (ACM).
Chicago-referens (17:e uppl.)Proceedings of the 1971 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control. Association for Computing Machinery (ACM).
MLA-referens (9:e uppl.)Proceedings of the 1971 ACM SIGFIDET (now SIGMOD) Workshop on Data Description, Access and Control. Association for Computing Machinery (ACM).
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.