Dyfyniad APA

Heilbroner, R. L., & Ford, A. M. (1971). Is economics relevant?: A reader in political economics. Goodyear Pub.

Dyfyniad Arddull Chicago

Heilbroner, Robert L., and Arthur M. Ford. Is Economics Relevant?: A Reader in Political Economics. Pacific Palisades, Calif: Goodyear Pub, 1971.

Dyfyniad MLA

Heilbroner, Robert L., and Arthur M. Ford. Is Economics Relevant?: A Reader in Political Economics. Goodyear Pub, 1971.

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