Cita APA (7a ed.)
Roeder, N. (2004). What We Don't Know. Communications of the ACM, 47(12), 13.
Cita Chicago Style (17a ed.)
Roeder, Nicholas. "What We Don't Know." Communications of the ACM 47, no. 12 (2004): 13.
Cita MLA (9a ed.)
Roeder, Nicholas. "What We Don't Know." Communications of the ACM, vol. 47, no. 12, 2004, p. 13.
Precaución: Estas citas no son 100% exactas.