Moellering, H. (1987). A final bibliography for digital cartographic data standards. National Committee for Digital Cartographic Data Standards.
Lua i Stíl Chicago (17ú heag.)Moellering, Harold. A Final Bibliography for Digital Cartographic Data Standards. Columbus, Ohio: National Committee for Digital Cartographic Data Standards, 1987.
Lua MLA (8ú heag.)Moellering, Harold. A Final Bibliography for Digital Cartographic Data Standards. National Committee for Digital Cartographic Data Standards, 1987.
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