Dyfyniad APA

Gujarati, D. N., & Porter, D. C. (2009). Basic econometrics (5th ed.). McGraw-Hill Irwin.

Dyfyniad Arddull Chicago

Gujarati, Damodar N., and Dawn C. Porter. Basic Econometrics. 5th ed. Boston: McGraw-Hill Irwin, 2009.

Dyfyniad MLA

Gujarati, Damodar N., and Dawn C. Porter. Basic Econometrics. 5th ed. McGraw-Hill Irwin, 2009.

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