Chappell, E. (2012). AutoCAD civil 3D essentials. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)Chappell, Eric. AutoCAD Civil 3D Essentials. Indianapolis: John Wiley & Sons, 2012.
Lua MLA (9ú heag.)Chappell, Eric. AutoCAD Civil 3D Essentials. John Wiley & Sons, 2012.
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