Roffman, H. (2008). Christopher and the boys: Howard Roffman. Gmünder.
Lua i Stíl Chicago (17ú heag.)Roffman, Howard. Christopher and the Boys: Howard Roffman. Berlin: Gmünder, 2008.
Lua MLA (8ú heag.)Roffman, Howard. Christopher and the Boys: Howard Roffman. Gmünder, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.