Dyfyniad APA

GILL, R. T. (1978). Economics: A text with readings.-- ed.3. Goodyear Pub.

Dyfyniad Arddull Chicago

GILL, Richard T. Economics: A Text with Readings.-- Ed.3. California: Goodyear Pub, 1978.

Dyfyniad MLA

GILL, Richard T. Economics: A Text with Readings.-- Ed.3. Goodyear Pub, 1978.

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