Dyfyniad APA

Lipsey,Richard G, & Peacock,Edward. (1963). An introduction to positive economics (5 & 7.). English Language Book Society.

Dyfyniad Arddull Chicago

Lipsey,Richard G, and Peacock,Edward. An Introduction to Positive Economics. 5 & 7. London: English Language Book Society, 1963.

Dyfyniad MLA

Lipsey,Richard G, and Peacock,Edward. An Introduction to Positive Economics. 5 & 7. English Language Book Society, 1963.

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