Al Yami، M. A.، و Martin، P. (2009). How the Land use of Meatpacking District has been Changed Since 1840 ? A geographic Information System GIS Application for Mapping Gentrification using Historic Data of Land use and Ownership Changes (رسالة ماجستير غير منشورة). University of Leicester، ليستر. مسترجع من http://search.mandumah.com/Record/662850