Dyfyniad APA

(1957). Three Essays On The State Of Economic Science / Tjalling C. Koopmans. McGraw-Hill.

Dyfyniad Arddull Chicago

Three Essays On The State Of Economic Science / Tjalling C. Koopmans. McGraw-Hill, 1957.

Dyfyniad MLA

Three Essays On The State Of Economic Science / Tjalling C. Koopmans. McGraw-Hill, 1957.

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