Dyfyniad APA

Johnston,Jack, & Dinardo, J. (1997). Econometric methods (4th ed.). Tata McGraw-Hill publishing Company Limited.

Dyfyniad Arddull Chicago

Johnston,Jack, and John Dinardo. Econometric Methods. 4th ed. New York: Tata McGraw-Hill publishing Company Limited, 1997.

Dyfyniad MLA

Johnston,Jack, and John Dinardo. Econometric Methods. 4th ed. Tata McGraw-Hill publishing Company Limited, 1997.

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