Marschall, R. (1989). Americas great comic strip artists. Abbeville.
Lua i Stíl Chicago (17ú heag.)Marschall, Richard. Americas Great Comic Strip Artists. New York: Abbeville, 1989.
Lua MLA (9ú heag.)Marschall, Richard. Americas Great Comic Strip Artists. Abbeville, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.