Dyfyniad APA

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

Dyfyniad Arddull Chicago

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

Dyfyniad MLA

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

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.