Singh, S. (2012). Beginning Google Sketchup for 3D Printing. Apress.
Trích dẫn kiểu ChicagoSingh, Sandeep. Beginning Google Sketchup for 3D Printing. Apress, 2012.
MLA citiranjeSingh, Sandeep. Beginning Google Sketchup for 3D Printing. Apress, 2012.
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