Cita APA (7a ed.)
Ledgard, H., Vardi, M. Y., Moran, T., Ben-Ari, M., & Byrd, D. (2011). Solved, for All Practical Purposes. Communications of the ACM, 54(9), 7-8.
Cita Chicago Style (17a ed.)
Ledgard, Henry, Moshe Y. Vardi, Tom Moran, Mordechai Ben-Ari, y David Byrd. "Solved, for All Practical Purposes." Communications of the ACM 54, no. 9 (2011): 7-8.
Cita MLA (9a ed.)
Ledgard, Henry, et al. "Solved, for All Practical Purposes." Communications of the ACM, vol. 54, no. 9, 2011, pp. 7-8.
Precaución: Estas citas no son 100% exactas.