Roberts, E. M. (1954). The time of man. New American Library.
Cita Chicago Style (17a ed.)Roberts, Elizabeth Madox. The Time of Man. New York: New American Library, 1954.
Cita MLA (9a ed.)Roberts, Elizabeth Madox. The Time of Man. New American Library, 1954.
Precaución: Estas citas no son 100% exactas.