Dyfyniad APA

Ricardo, D. (1971). On the Principles of Political Economy and Taxation. Penguin.

Dyfyniad Arddull Chicago

Ricardo, David. On the Principles of Political Economy and Taxation. England: Penguin, 1971.

Dyfyniad MLA

Ricardo, David. On the Principles of Political Economy and Taxation. Penguin, 1971.

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