Dyfyniad APA

Jhonston, J. (1963). Econometric methods/2nd ed (2nd ed.). McGraw hill.

Dyfyniad Arddull Chicago

Jhonston, J. Econometric Methods/2nd Ed. 2nd ed. New delhi: McGraw hill, 1963.

Dyfyniad MLA

Jhonston, J. Econometric Methods/2nd Ed. 2nd ed. McGraw hill, 1963.

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