APA ציטוט

Eissen, K., & Steur, R. Sketching: Drawing techniques for product designers.

Chicago Style (17th ed.) Citation

Eissen, Koos, and Roselien Steur. Sketching: Drawing Techniques for Product Designers.

ציטוט MLA

Eissen, Koos, and Roselien Steur. Sketching: Drawing Techniques for Product Designers.