APA aipamena

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

Chicago Style aipamena

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

MLA aipamena

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