APA استشهاد

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

استشهاد بنمط شيكاغو

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

MLA استشهاد

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