APA (7th ed.) Citation

ACM Conference on Electronic Commerce, Special Interest Group on Electronic Commerce, & Association for Computing Machinery. (1999). Proceedings of the ACM Conference on Electronic Commerce. Association for Computing Machinery.

Chicago Style (17th ed.) Citation

ACM Conference on Electronic Commerce, Special Interest Group on Electronic Commerce, and Association for Computing Machinery. Proceedings of the ACM Conference on Electronic Commerce. New York, N.Y.: Association for Computing Machinery, 1999.

MLA (9th ed.) Citation

ACM Conference on Electronic Commerce, et al. Proceedings of the ACM Conference on Electronic Commerce. Association for Computing Machinery, 1999.