Enstice, W., & Peters, M. (1990). Drawing: Space, form, expression. Prentice Hall.
Lua i Stíl Chicago (17ú heag.)Enstice, Wayne, agus Melody Peters. Drawing: Space, Form, Expression. Englewood Cliffs, N.J: Prentice Hall, 1990.
Lua MLA (9ú heag.)Enstice, Wayne, agus Melody Peters. Drawing: Space, Form, Expression. Prentice Hall, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.