Dyfyniad APA

R Carter Hill. (2010). Principles of ecnometrices 4th ed. Wiley.

Dyfyniad Arddull Chicago

R Carter Hill. Principles of Ecnometrices 4th Ed. Wiley, 2010.

Dyfyniad MLA

R Carter Hill. Principles of Ecnometrices 4th Ed. Wiley, 2010.

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