(1933). (Journal) Econometrica. University of Chicago press.
Dyfyniad Arddull Chicago(Journal) Econometrica. Chicago: University of Chicago press, 1933.
Dyfyniad MLA(Journal) Econometrica. University of Chicago press, 1933.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.