Dyfyniad APA

Journal of American Statistical Association: Vol.75,1980. American Statistical Association.

Dyfyniad Arddull Chicago

Journal of American Statistical Association: Vol.75,1980. USA: American Statistical Association.

Dyfyniad MLA

Journal of American Statistical Association: Vol.75,1980. American Statistical Association.

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