Wallschlaeger, C. (1992). Basic visual concepts and principles: For artists, architects , and designers (Na.). McGraw Hill.
Lua i Stíl Chicago (17ú heag.)Wallschlaeger, Charles. Basic Visual Concepts and Principles: For Artists, Architects , and Designers. Na. Boston: McGraw Hill, 1992.
Lua MLA (9ú heag.)Wallschlaeger, Charles. Basic Visual Concepts and Principles: For Artists, Architects , and Designers. Na. McGraw Hill, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.