Cita APA (7a ed.)

Barnes, H. E. (1970). An introduction to the history of sociology. University of Chicago Press.

Cita Chicago Style (17a ed.)

Barnes, Harry Elmer. An Introduction to the History of Sociology. Chicago [etc.]: University of Chicago Press, 1970.

Cita MLA (9a ed.)

Barnes, Harry Elmer. An Introduction to the History of Sociology. University of Chicago Press, 1970.