Mühlberger, R. (1994). What makes a Raphael a Raphael? Cherrytree Press.
Lua i Stíl Chicago (17ú heag.)Mühlberger, Richard. What Makes a Raphael a Raphael? Bath [England]: Cherrytree Press, 1994.
Lua MLA (8ú heag.)Mühlberger, Richard. What Makes a Raphael a Raphael? Cherrytree Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.