APA Citatie

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

Chicago Style citaat

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

MLA citatie

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