Cita APA (7a ed.)
Cerf, V. (2005). The Imperceptible Cost of Eliminating Spam. Communications of the ACM, 48(6), 12.
Cita Chicago Style (17a ed.)
Cerf, Vinton. "The Imperceptible Cost of Eliminating Spam." Communications of the ACM 48, no. 6 (2005): 12.
Cita MLA (9a ed.)
Cerf, Vinton. "The Imperceptible Cost of Eliminating Spam." Communications of the ACM, vol. 48, no. 6, 2005, p. 12.
Precaución: Estas citas no son 100% exactas.