APA
United Nations Economic and Social Affairs (Deptt of-), United Nations Economic and Social Affairs (Deptt of-), . (2000). Handbook on geographic information systems and dig. New York: United Nations USA.
Chicago
United Nations Economic and Social Affairs (Deptt of-), United Nations Economic and Social Affairs (Deptt of-), . 2000. Handbook on geographic information systems and dig. New York: United Nations USA.
Harvard
United Nations Economic and Social Affairs (Deptt of-), United Nations Economic and Social Affairs (Deptt of-), . (2000). Handbook on geographic information systems and dig. New York: United Nations USA.
MLA
United Nations Economic and Social Affairs (Deptt of-), United Nations Economic and Social Affairs (Deptt of-), . Handbook on geographic information systems and dig. New York: United Nations USA. 2000.
