APA
Baron P., Research for transport policies in a changing world. World conference on transport research & Nuppnau H. (1983). Research for transport policies in a changing world. World conference on transport research, Hamburg, 26.-29. April 1983. Proceedings. Vol 1-2. Hamburg: Studiengesellschaft Nahverkehr SNV.
Chicago
Baron Paul, Research for transport policies in a changing world. World conference on transport research and Nuppnau Heino. 1983. Research for transport policies in a changing world. World conference on transport research, Hamburg, 26.-29. April 1983. Proceedings. Vol 1-2. Hamburg: Studiengesellschaft Nahverkehr SNV.
Harvard
Baron P., Research for transport policies in a changing world. World conference on transport research and Nuppnau H. (1983). Research for transport policies in a changing world. World conference on transport research, Hamburg, 26.-29. April 1983. Proceedings. Vol 1-2. Hamburg: Studiengesellschaft Nahverkehr SNV.
MLA
Baron Paul, Research for transport policies in a changing world. World conference on transport research and Nuppnau Heino. Research for transport policies in a changing world. World conference on transport research, Hamburg, 26.-29. April 1983. Proceedings. Vol 1-2. Hamburg: Studiengesellschaft Nahverkehr SNV. 1983.