Ehrenberg, R. E. (1987). Scholars' guide to Washington, D.C. for cartography and remote sensing imagery: (maps, charts, aerial photographs, satellite images, cartographic literature and geographic information systems). Smithsonian Inst. Press.
Chicago-Zitierstil (17. Ausg.)Ehrenberg, Ralph E. Scholars' Guide to Washington, D.C. for Cartography and Remote Sensing Imagery: (maps, Charts, Aerial Photographs, Satellite Images, Cartographic Literature and Geographic Information Systems). Washington, DC: Smithsonian Inst. Press, 1987.
MLA-Zitierstil (9. Ausg.)Ehrenberg, Ralph E. Scholars' Guide to Washington, D.C. for Cartography and Remote Sensing Imagery: (maps, Charts, Aerial Photographs, Satellite Images, Cartographic Literature and Geographic Information Systems). Smithsonian Inst. Press, 1987.