Dyfyniad APA

William, W. H. (1978). sampler on sampling. John Wiley.

Dyfyniad Arddull Chicago

William, William Howard. Sampler on Sampling. New York: John Wiley, 1978.

Dyfyniad MLA

William, William Howard. Sampler on Sampling. John Wiley, 1978.

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