APA

Zilles S. N., Association for Computing Machinery, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Management of Data & ACM Special Interest Group on Programming Languages. (1980). Proceedings of the 1980 workshop on Data abstraction, databases and conceptual modeling. New York, NY: ACM.

Chicago

Zilles Stephen N, Association for Computing Machinery, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Management of Data and ACM Special Interest Group on Programming Languages. 1980. Proceedings of the 1980 workshop on Data abstraction, databases and conceptual modeling. New York, NY: ACM.

Harvard

Zilles S. N., Association for Computing Machinery, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Management of Data and ACM Special Interest Group on Programming Languages. (1980). Proceedings of the 1980 workshop on Data abstraction, databases and conceptual modeling. New York, NY: ACM.

MLA

Zilles Stephen N, Association for Computing Machinery, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Management of Data and ACM Special Interest Group on Programming Languages. Proceedings of the 1980 workshop on Data abstraction, databases and conceptual modeling. New York, NY: ACM. 1980.