Eissen, K., & Steur, R. Sketching: Product design presentation.
Cita Chicago (17th ed.)Eissen, Koos, i Roselien Steur. Sketching: Product Design Presentation.
Cita MLA (8th ed.)Eissen, Koos, i Roselien Steur. Sketching: Product Design Presentation.
Atenció: Aquestes cites poden no estar 100% correctes.