Dyfyniad APA

USHER, D. (1980). The Measurement of economic growth. Heritage.

Dyfyniad Arddull Chicago

USHER, Dan. The Measurement of Economic Growth. New Delhi: Heritage, 1980.

Dyfyniad MLA

USHER, Dan. The Measurement of Economic Growth. Heritage, 1980.

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