GAIR, A. (1994). Drawing: A step-by step guide to drawing techniques. New Holland Publishers.
Chicago Style aipamenaGAIR, Angela. Drawing: A Step-by Step Guide to Drawing Techniques. New Holland Publishers, 1994.
MLA aipamenaGAIR, Angela. Drawing: A Step-by Step Guide to Drawing Techniques. New Holland Publishers, 1994.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.