APA (7th ed.) Citation

ACM Conference on Electronic Commerce & Association for Computing Machinery. Special Interest Group on Electronic Commerce. (1999). Proceedings of the ACM Conference on Electronic Commerce: EC'99, Denver, Colorado, November 3-5, 1999. ACM.

Chicago Style (17th ed.) Citation

ACM Conference on Electronic Commerce and Association for Computing Machinery. Special Interest Group on Electronic Commerce. Proceedings of the ACM Conference on Electronic Commerce: EC'99, Denver, Colorado, November 3-5, 1999. New York: ACM, 1999.

MLA (9th ed.) Citation

ACM Conference on Electronic Commerce and Association for Computing Machinery. Special Interest Group on Electronic Commerce. Proceedings of the ACM Conference on Electronic Commerce: EC'99, Denver, Colorado, November 3-5, 1999. ACM, 1999.