Cita APA (7a ed.)

Ellis, C., Zigurs, I. C., & Ellis, C. A. C. (2001). Proceedings of the 2001 International ACM SIGGROUP Conference on Supporting Group Work. ACM.

Cita Chicago Style (17a ed.)

Ellis, Clarence, Ilze Contributor Zigurs, y Clarence Arthur Contributor Ellis. Proceedings of the 2001 International ACM SIGGROUP Conference on Supporting Group Work. [Place of publication not identified]: ACM, 2001.

Cita MLA (9a ed.)

Ellis, Clarence, et al. Proceedings of the 2001 International ACM SIGGROUP Conference on Supporting Group Work. ACM, 2001.