एपीए उद्धरण

Singh, S. (2012). Beginning Google Sketchup for 3D Printing. Apress.

शिकागो स्टाइल उद्धरण

Singh, Sandeep. Beginning Google Sketchup for 3D Printing. Apress, 2012.

एमएलए उद्धरण

Singh, Sandeep. Beginning Google Sketchup for 3D Printing. Apress, 2012.