Παραπομπή APA

Theil, H. (1961). Economic forecasts and policy. North Holland Publishing Company.

Παραπομπή Chicago Style

Theil, H. Economic Forecasts and Policy. London: North Holland Publishing Company, 1961.

Παραπομπή MLA

Theil, H. Economic Forecasts and Policy. North Holland Publishing Company, 1961.