Proceedings of the 1980 workshop on Data abstraction, databases and conceptual modeling. Association for Computing Machinery (ACM).
Chicago-referens (17:e uppl.)Proceedings of the 1980 Workshop on Data Abstraction, Databases and Conceptual Modeling. Association for Computing Machinery (ACM).
MLA-referens (9:e uppl.)Proceedings of the 1980 Workshop on Data Abstraction, Databases and Conceptual Modeling. Association for Computing Machinery (ACM).
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.