Citazione Stile APA (7a Edizione)

Richards, J. (2013). Freehand drawing and discovery: Urban sketching and concept drawing for designers. Wiley.

Citazione stile Chigago Style (17a edizione)

Richards, James. Freehand Drawing and Discovery: Urban Sketching and Concept Drawing for Designers. Hoboken, New Jersey: Wiley, 2013.

Citatione MLA (8a ed.)

Richards, James. Freehand Drawing and Discovery: Urban Sketching and Concept Drawing for Designers. Wiley, 2013.

Attenzione: Queste citazioni potrebbero non essere precise al 100%.