European Conference of Ministers of Transport. (1991). Activities of the conference: 37th annual report ; resolutions of the council of Ministers of Transport and reports approved in 1990, Stockholm, 29th - 30th May 1990, Paris, 21st - 22nd November 1990. ECMT.
Chicago-Zitierstil (17. Ausg.)European Conference of Ministers of Transport. Activities of the Conference: 37th Annual Report ; Resolutions of the Council of Ministers of Transport and Reports Approved in 1990, Stockholm, 29th - 30th May 1990, Paris, 21st - 22nd November 1990. Paris: ECMT, 1991.
MLA-Zitierstil (9. Ausg.)European Conference of Ministers of Transport. Activities of the Conference: 37th Annual Report ; Resolutions of the Council of Ministers of Transport and Reports Approved in 1990, Stockholm, 29th - 30th May 1990, Paris, 21st - 22nd November 1990. ECMT, 1991.