Cita APA (7a ed.)

Ketchel, J. S. (1977). Proceedings of the 1977 annual conference. ACM.

Cita Chicago Style (17a ed.)

Ketchel, James S. Proceedings of the 1977 Annual Conference. New York: ACM, 1977.

Cita MLA (9a ed.)

Ketchel, James S. Proceedings of the 1977 Annual Conference. ACM, 1977.