Cita APA (7th ed.)

Williams, B. (1978). A sampler on sampling. John Wiley and Sons.

Cita Chicago (17th ed.)

Williams, Bill. A Sampler on Sampling. Nueva York: John Wiley and Sons, 1978.

Cita MLA (9th ed.)

Williams, Bill. A Sampler on Sampling. John Wiley and Sons, 1978.