Dyfyniad APA

Sloman, J., & Sutcliffe, M. (1997). Economics (3rd ed.). Prentice Hall.

Dyfyniad Arddull Chicago

Sloman, John, and Mark Sutcliffe. Economics. 3rd ed. Harlow, England ; New York ; New Delhi: Prentice Hall, 1997.

Dyfyniad MLA

Sloman, John, and Mark Sutcliffe. Economics. 3rd ed. Prentice Hall, 1997.

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