Malaysia & International Group Meeting on Regional Planning in the 1990's. (1991). Planning problems, models, and geographic information systems: Report and summary of proceedings of the Malaysia-UNCRD International Expert Group Meeting on Regional Planning in the 1990s : Using and Managing Geographic Information, Kuala Lumpur, Malaysia, 24-28 September 1990. United Nations Centre for Regional Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Malaysia και International Group Meeting on Regional Planning in the 1990's. Planning Problems, Models, and Geographic Information Systems: Report and Summary of Proceedings of the Malaysia-UNCRD International Expert Group Meeting on Regional Planning in the 1990s : Using and Managing Geographic Information, Kuala Lumpur, Malaysia, 24-28 September 1990. Nagoya: United Nations Centre for Regional Development, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Malaysia και International Group Meeting on Regional Planning in the 1990's. Planning Problems, Models, and Geographic Information Systems: Report and Summary of Proceedings of the Malaysia-UNCRD International Expert Group Meeting on Regional Planning in the 1990s : Using and Managing Geographic Information, Kuala Lumpur, Malaysia, 24-28 September 1990. United Nations Centre for Regional Development, 1991.