Cita APA (7a ed.)
Manchak, J. B. (2009). On the Existence of "Time Machines" in General Relativity. Philosophy of Science, 76(5), 1020-1027.
Cita Chicago Style (17a ed.)
Manchak, John Byron. "On the Existence of "Time Machines" in General Relativity." Philosophy of Science 76, no. 5 (2009): 1020-1027.
Cita MLA (9a ed.)
Manchak, John Byron. "On the Existence of "Time Machines" in General Relativity." Philosophy of Science, vol. 76, no. 5, 2009, pp. 1020-1027.
Precaución: Estas citas no son 100% exactas.