Gair, A. (1997). Drawing: A complete step-by-step guide to techniques and materials. New Holland.
Lua i Stíl Chicago (17ú heag.)Gair, Angela. Drawing: A Complete Step-by-step Guide to Techniques and Materials. London: New Holland, 1997.
Lua MLA (9ú heag.)Gair, Angela. Drawing: A Complete Step-by-step Guide to Techniques and Materials. New Holland, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.