APA (7th ed.) Zitazioa

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

Chicago Style (17th ed.) Zitazioa

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

MLA (9th ed.) Zitazioa

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