Dyfyniad APA

Koopmans, T. C. (1957). Three essays on the state of eocnomic science. McGraw Hill.

Dyfyniad Arddull Chicago

Koopmans, Tjalling C. Three Essays on the State of Eocnomic Science. New York: McGraw Hill, 1957.

Dyfyniad MLA

Koopmans, Tjalling C. Three Essays on the State of Eocnomic Science. McGraw Hill, 1957.

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