APA (7th ed.) Zitazioa

F.Zeuthen. (1957). Economic theory and method. Longmans.

Chicago Style (17th ed.) Zitazioa

F.Zeuthen. Economic Theory and Method. London: Longmans, 1957.

MLA (9th ed.) Zitazioa

F.Zeuthen. Economic Theory and Method. Longmans, 1957.