Dyfyniad APA

Riddell, T., & Stamos, S. (1979). Economics: A tool for understanding society. Addison-Wesley.

Dyfyniad Arddull Chicago

Riddell, Tom, and Steve Stamos. Economics: A Tool for Understanding Society. London: Addison-Wesley, 1979.

Dyfyniad MLA

Riddell, Tom, and Steve Stamos. Economics: A Tool for Understanding Society. Addison-Wesley, 1979.

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