Dyfyniad APA

Cochran, W. G., & Cochran, W. G. (1977). Sampling Techniques William G. Cochran. John Wiley &Sons.

Dyfyniad Arddull Chicago

Cochran, William G., and William G. Cochran. Sampling Techniques William G. Cochran. John Wiley &Sons, 1977.

Dyfyniad MLA

Cochran, William G., and William G. Cochran. Sampling Techniques William G. Cochran. John Wiley &Sons, 1977.

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