APA

TFK+VTI Transportforschung GmbH, . (1991). New strategies for European freight transport '90. Conference October 29-30, 1990 in Hamburg. Proceedings. Hamburg: TFK+VTI Transportforschung GmbH.

Chicago

TFK+VTI Transportforschung GmbH, . 1991. New strategies for European freight transport '90. Conference October 29-30, 1990 in Hamburg. Proceedings. Hamburg: TFK+VTI Transportforschung GmbH.

Harvard

TFK+VTI Transportforschung GmbH, . (1991). New strategies for European freight transport '90. Conference October 29-30, 1990 in Hamburg. Proceedings. Hamburg: TFK+VTI Transportforschung GmbH.

MLA

TFK+VTI Transportforschung GmbH, . New strategies for European freight transport '90. Conference October 29-30, 1990 in Hamburg. Proceedings. Hamburg: TFK+VTI Transportforschung GmbH. 1991.