Dyfyniad APA

Sarndal, C., Swensson, B., & Wretman, J. (1992). Model assisted survey sampling. Springer- verlag.

Dyfyniad Arddull Chicago

Sarndal, Carl-Erik, Bengt Swensson, and Jan Wretman. Model Assisted Survey Sampling. New York: Springer- verlag, 1992.

Dyfyniad MLA

Sarndal, Carl-Erik, et al. Model Assisted Survey Sampling. Springer- verlag, 1992.

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