Cita APA (7a ed.)

Gey, F., Gey, F. C. C., & Hearst, M. C. (1999). Proceedings of the 22nd annual International ACM SIGIR Conference on Research and Development in Information Retrieval. ACM.

Cita Chicago Style (17a ed.)

Gey, Fredric, Fredric C. Contributor Gey, y Marti Contributor Hearst. Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval. [Place of publication not identified]: ACM, 1999.

Cita MLA (9a ed.)

Gey, Fredric, et al. Proceedings of the 22nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval. ACM, 1999.