Cita APA (7th ed.)

Schaffer, R. l. (1986). Elementary Survey Sampling (1st edition.). Duxbury.

Cita Chicago (17th ed.)

Schaffer, Richard l. Elementary Survey Sampling. 1st edition. Boston: Duxbury, 1986.

Cita MLA (9th ed.)

Schaffer, Richard l. Elementary Survey Sampling. 1st edition. Duxbury, 1986.