APA (7th ed.) Citation

Association for Computing Machinery, ACM (New York City, USA). (2012). Electronic commerce: EC '12, proceedings of the 2012 ACM conference, Valencia, Spain, June 4-8, 2012. ACM - Association for Computing Machinery.

Chicago Style (17th ed.) Citation

Association for Computing Machinery, ACM (New York City, USA). Electronic Commerce: EC '12, Proceedings of the 2012 ACM Conference, Valencia, Spain, June 4-8, 2012. New York: ACM - Association for Computing Machinery, 2012.

MLA (9th ed.) Citation

Association for Computing Machinery, ACM (New York City, USA). Electronic Commerce: EC '12, Proceedings of the 2012 ACM Conference, Valencia, Spain, June 4-8, 2012. ACM - Association for Computing Machinery, 2012.