Heineberg, H., Lange, N. d., & Mayr, A. (1996). The Rhine Valley, urban, harbour and industrial development and environmental problems: A regional guide dedicated to the 28th International Geographical Congress. Leipzig: Instituto fur Landerkunde Leipzig.
Citación estilo ChicagoHeineberg, Heinz, Norbert de Lange, y Alois Mayr. The Rhine Valley, Urban, Harbour and Industrial Development and Environmental Problems: A Regional Guide Dedicated to the 28th International Geographical Congress. Leipzig: Instituto fur Landerkunde Leipzig, 1996.
Cita MLAHeineberg, Heinz, Norbert de Lange, y Alois Mayr. The Rhine Valley, Urban, Harbour and Industrial Development and Environmental Problems: A Regional Guide Dedicated to the 28th International Geographical Congress. Leipzig: Instituto fur Landerkunde Leipzig, 1996.