Dyfyniad APA

Journal of the American statistical economic association 1952, Vol.47.

Dyfyniad Arddull Chicago

Journal of the American Statistical Economic Association 1952, Vol.47.

Dyfyniad MLA

Journal of the American Statistical Economic Association 1952, Vol.47.

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