Richards, J. (2013). Freehand drawing and discovery: Urban sketching and concept drawing for designers. Wiley.
Chicago-Zitierstil (17. Ausg.)Richards, James. Freehand Drawing and Discovery: Urban Sketching and Concept Drawing for Designers. Hoboken, New Jersey: Wiley, 2013.
MLA-Zitierstil (8. Ausg.)Richards, James. Freehand Drawing and Discovery: Urban Sketching and Concept Drawing for Designers. Wiley, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.