Dyfyniad APA

Cassel, C. (1977). Foundations of inference in survey sampling. John Wiley.

Dyfyniad Arddull Chicago

Cassel, Claes-Magnus. Foundations of Inference in Survey Sampling. New York: John Wiley, 1977.

Dyfyniad MLA

Cassel, Claes-Magnus. Foundations of Inference in Survey Sampling. John Wiley, 1977.

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