Cita APA (7a ed.)

Cheung, D., & Cheung, D. C. (2009). Proceedings of the 18th Acm Conference on Information and Knowledge Management. Association for Computing Machinery.

Cita Chicago Style (17a ed.)

Cheung, David, y David Contributor Cheung. Proceedings of the 18th Acm Conference on Information and Knowledge Management. [Place of publication not identified]: Association for Computing Machinery, 2009.

Cita MLA (9a ed.)

Cheung, David, y David Contributor Cheung. Proceedings of the 18th Acm Conference on Information and Knowledge Management. Association for Computing Machinery, 2009.