Cita APA (7a ed.)

Levin, J., & Fox, J. A. (1994). Elementary statistics in social research (6th ed.). HarperCollins College.

Cita Chicago Style (17a ed.)

Levin, Jack, y James Alan Fox. Elementary Statistics in Social Research. 6th ed. New York: HarperCollins College, 1994.

Cita MLA (9a ed.)

Levin, Jack, y James Alan Fox. Elementary Statistics in Social Research. 6th ed. HarperCollins College, 1994.