APA (7th ed.) Citation

Eissen, K., & Steur, R. (2011). Sketching : the basics / Koos Eissen & Roselien Steur: The basics. BIS.

Chicago Style (17th ed.) Citation

Eissen, Koos, and Roselien Steur. Sketching : The Basics / Koos Eissen & Roselien Steur: The Basics. Amsterdam: BIS, 2011.

MLA (9th ed.) Citation

Eissen, Koos, and Roselien Steur. Sketching : The Basics / Koos Eissen & Roselien Steur: The Basics. BIS, 2011.

Warning: These citations may not always be 100% accurate.