Dyfyniad APA

Tullberg,Rita Mc Williams. (1990). Alfred Marshall in retrospect. Edward Elgar Publishing Ltd.

Dyfyniad Arddull Chicago

Tullberg,Rita Mc Williams. Alfred Marshall in Retrospect. England: Edward Elgar Publishing Ltd, 1990.

Dyfyniad MLA

Tullberg,Rita Mc Williams. Alfred Marshall in Retrospect. Edward Elgar Publishing Ltd, 1990.

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