Kumar,Keshaw. (2011). Rendering with Pencil & Pen Sketching. Adarsh Book.
Chicago Style (17th ed.) ZitazioaKumar,Keshaw. Rendering with Pencil & Pen Sketching. New Delhi: Adarsh Book, 2011.
MLA (9th ed.) ZitazioaKumar,Keshaw. Rendering with Pencil & Pen Sketching. Adarsh Book, 2011.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.