Cita APA (7a ed.)
Armour, P. G. (2007). Twenty Percent. Communications of the ACM, 50(6), 21-24.
Cita Chicago Style (17a ed.)
Armour, Phillip G. "Twenty Percent." Communications of the ACM 50, no. 6 (2007): 21-24.
Cita MLA (9a ed.)
Armour, Phillip G. "Twenty Percent." Communications of the ACM, vol. 50, no. 6, 2007, pp. 21-24.
Precaución: Estas citas no son 100% exactas.