Dyfyniad APA

Johnston, J. (1984). Econometric methods (3rd ed.). McGraw-Hill.

Dyfyniad Arddull Chicago

Johnston, J. Econometric Methods. 3rd ed. New York: McGraw-Hill, 1984.

Dyfyniad MLA

Johnston, J. Econometric Methods. 3rd ed. McGraw-Hill, 1984.

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