Cita APA (7th ed.)

Stephan, F. F., & McCarthy, P. J. (1963). Sampling opinions: An analysis of survey procedure. Wiley.

Cita Chicago (17th ed.)

Stephan, Frederick Franklin, i Philip J. McCarthy. Sampling Opinions: An Analysis of Survey Procedure. N.Y.: Wiley, 1963.

Cita MLA (8th ed.)

Stephan, Frederick Franklin, i Philip J. McCarthy. Sampling Opinions: An Analysis of Survey Procedure. Wiley, 1963.