Dyfyniad APA

Kohler, H. (1970). Economics: The science of scarcity. Dryden Press.

Dyfyniad Arddull Chicago

Kohler, Heinz. Economics: The Science of Scarcity. Illinois: Dryden Press, 1970.

Dyfyniad MLA

Kohler, Heinz. Economics: The Science of Scarcity. Dryden Press, 1970.

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