APA

SIGMOD'90, Association for Computing Machinery & ACM Special Interest Group on Management of Data. (1990). Proceedings of the 1990 ACM SIGMOD international conference on Management of data. New York, NY: ACM.

Chicago

SIGMOD'90, Association for Computing Machinery and ACM Special Interest Group on Management of Data. 1990. Proceedings of the 1990 ACM SIGMOD international conference on Management of data. New York, NY: ACM.

Harvard

SIGMOD'90, Association for Computing Machinery and ACM Special Interest Group on Management of Data. (1990). Proceedings of the 1990 ACM SIGMOD international conference on Management of data. New York, NY: ACM.

MLA

SIGMOD'90, Association for Computing Machinery and ACM Special Interest Group on Management of Data. Proceedings of the 1990 ACM SIGMOD international conference on Management of data. New York, NY: ACM. 1990.