International Symposium on Theory and Practice in Transport Economics (7th : 1977 : London, England). (1978). The contribution of economic research to transport policy decisions: Introductory reports and summary of the discussion. European Conference of Ministers of Transport (ECMT).
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)International Symposium on Theory and Practice in Transport Economics (7th : 1977 : London, England). The Contribution of Economic Research to Transport Policy Decisions: Introductory Reports and Summary of the Discussion. London: European Conference of Ministers of Transport (ECMT), 1978.
Trích dẫn kiểu MLA (xuất bản lần thứ 9)International Symposium on Theory and Practice in Transport Economics (7th : 1977 : London, England). The Contribution of Economic Research to Transport Policy Decisions: Introductory Reports and Summary of the Discussion. European Conference of Ministers of Transport (ECMT), 1978.