Cita APA (7a ed.)
Freud, S. (1961). Civilization and its discontents.
Cita estilo Chicago (17a ed.)
Freud, Sigmund. Civilization and Its Discontents. 1961.
Cita MLA (9a ed.)
Freud, Sigmund. Civilization and Its Discontents. 1961.
Precaución: Estas citas no son 100% exactas.