Dyfyniad APA

(1964). Studies on the theory of reproduction and prices. Warszawa: PWN--Polish Scientific Publishers.

Dyfyniad Arddull Chicago

Studies On the Theory of Reproduction and Prices. Warszawa: PWN--Polish Scientific Publishers, 1964.

Dyfyniad MLA

Studies On the Theory of Reproduction and Prices. Warszawa: PWN--Polish Scientific Publishers, 1964.

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