Hubbard, G., & Zimmerman, E. (1982). Artstrands: A progtam of individualized art instruction. Waveland Press.
Lua i Stíl Chicago (17ú heag.)Hubbard, Guy, agus Enid Zimmerman. Artstrands: A Progtam of Individualized Art Instruction. Prospect Heights: Waveland Press, 1982.
Lua MLA (9ú heag.)Hubbard, Guy, agus Enid Zimmerman. Artstrands: A Progtam of Individualized Art Instruction. Waveland Press, 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.