Dyfyniad APA

Journal of American Statistical Association: Vol.68,1973. American Statistical Association.

Dyfyniad Arddull Chicago

Journal of American Statistical Association: Vol.68,1973. USA: American Statistical Association.

Dyfyniad MLA

Journal of American Statistical Association: Vol.68,1973. American Statistical Association.

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