United Nations Centre for Regional Development & International Conference on Geographic Information Systems Applications for Urban and Regional Planning. (1990). Geographic information systems applications for urban and regional planning: Report and summary of proceedings of the International Conference on Geographic Information systems Applications for Urban and Regional Planning, Ciloto, Puncak, Indonesia, 2-6 October 1989. United Nations Centre for Regional Development.
Čikaški stil citiranja (17. izdanje)United Nations Centre for Regional Development i International Conference on Geographic Information Systems Applications for Urban and Regional Planning. Geographic Information Systems Applications for Urban and Regional Planning: Report and Summary of Proceedings of the International Conference on Geographic Information Systems Applications for Urban and Regional Planning, Ciloto, Puncak, Indonesia, 2-6 October 1989. Nagoya: United Nations Centre for Regional Development, 1990.
MLA način citiranja (9. izdanje)United Nations Centre for Regional Development i International Conference on Geographic Information Systems Applications for Urban and Regional Planning. Geographic Information Systems Applications for Urban and Regional Planning: Report and Summary of Proceedings of the International Conference on Geographic Information Systems Applications for Urban and Regional Planning, Ciloto, Puncak, Indonesia, 2-6 October 1989. United Nations Centre for Regional Development, 1990.