APA (7th ed.) Citation

National Cartographic Information Center. Sources for digital spatial data. The Center : [1989].

Chicago Style (17th ed.) Citation

National Cartographic Information Center. Sources for Digital Spatial Data. Reston, Va.: The Center : [1989].

MLA (9th ed.) Citation

National Cartographic Information Center. Sources for Digital Spatial Data. The Center : [1989].

Warning: These citations may not always be 100% accurate.