Lockard, W. K. (1975). Design drawing experiences. L. Pepper.
Lua i Stíl Chicago (17ú heag.)Lockard, William Kurby. Design Drawing Experiences. Tuczon, Ariz: L. Pepper, 1975.
Lua MLA (9ú heag.)Lockard, William Kurby. Design Drawing Experiences. L. Pepper, 1975.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.