Dyfyniad APA

Gujarati, D. N., & Porter, D. C. (2010). Essentials of econometrics (4th ed.). McGraw-Hill/Irwin.

Dyfyniad Arddull Chicago

Gujarati, Damodar N., and Dawn C. Porter. Essentials of Econometrics. 4th ed. Boston, Mass: McGraw-Hill/Irwin, 2010.

Dyfyniad MLA

Gujarati, Damodar N., and Dawn C. Porter. Essentials of Econometrics. 4th ed. McGraw-Hill/Irwin, 2010.

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