APA (7th ed.) Citation

Crowcroft, J., & Crowcroft, J. C. (2009). Proceedings of the 2nd Acm Workshop on Online Social Networks. Association for Computing Machinery.

Chicago Style (17th ed.) Citation

Crowcroft, Jon, and Jon Contributor Crowcroft. Proceedings of the 2nd Acm Workshop on Online Social Networks. [Place of publication not identified]: Association for Computing Machinery, 2009.

MLA (9th ed.) Citation

Crowcroft, Jon, and Jon Contributor Crowcroft. Proceedings of the 2nd Acm Workshop on Online Social Networks. Association for Computing Machinery, 2009.