Muehl, W. (1986). Why preach ? Why listen ? Fortress.
Lua i Stíl Chicago (17ú heag.)Muehl, William. Why Preach ? Why Listen ? Philadelphia: Fortress, 1986.
Lua MLA (9ú heag.)Muehl, William. Why Preach ? Why Listen ? Fortress, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.