APA

Vianu V., Association for Computing Machinery, ACM Special Interest Group on Artificial Intelligence, ACM Special Interest Group on Management of Data & ACM Special Interest Group on Algorithms and Computation Theory. (1999). Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems. New York, NY: ACM.

Chicago

Vianu Victor, 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 Algorithms and Computation Theory. 1999. Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems. New York, NY: ACM.

Harvard

Vianu V., 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 Algorithms and Computation Theory. (1999). Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems. New York, NY: ACM.

MLA

Vianu Victor, 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 Algorithms and Computation Theory. Proceedings of the eighteenth ACM SIGMOD-SIGACT-SIGART symposium on Principles of database systems. New York, NY: ACM. 1999.