APA
Międzynarodowy Kongres Geograficzny, Heineberg H., Mayr A. & Lange N. d. (1996). The Rhine Valley: urban, harbour and industrial development and environmental problems : a regional guide dedicated to the 28th International Geographical Congress, The Hague 1996. Leipzig: Institut für Länderkunde.
Chicago
Międzynarodowy Kongres Geograficzny, Heineberg Heinz, Mayr Alois and Lange Norbert de. 1996. The Rhine Valley: urban, harbour and industrial development and environmental problems : a regional guide dedicated to the 28th International Geographical Congress, The Hague 1996. Leipzig: Institut für Länderkunde.
Harvard
Międzynarodowy Kongres Geograficzny, Heineberg H., Mayr A. and Lange N. d. (1996). The Rhine Valley: urban, harbour and industrial development and environmental problems : a regional guide dedicated to the 28th International Geographical Congress, The Hague 1996. Leipzig: Institut für Länderkunde.
MLA
Międzynarodowy Kongres Geograficzny, Heineberg Heinz, Mayr Alois and Lange Norbert de. The Rhine Valley: urban, harbour and industrial development and environmental problems : a regional guide dedicated to the 28th International Geographical Congress, The Hague 1996. Leipzig: Institut für Länderkunde. 1996.