Dyfyniad APA

Case, K. E., Fair, R. C., & Oster, S. M. (2014). Principles of macroeconomics (Tenth edition.). Pearson.

Dyfyniad Arddull Chicago

Case, Karl E., Ray C. Fair, and Sharon M. Oster. Principles of Macroeconomics. Tenth edition. Boston: Pearson, 2014.

Dyfyniad MLA

Case, Karl E., et al. Principles of Macroeconomics. Tenth edition. Pearson, 2014.

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