Hanley, B. (1987). A Philadelphia Story (Katharine Drexel). Bensalem, Pa..
Lua i Stíl Chicago (17ú heag.)Hanley, Boniface. A Philadelphia Story (Katharine Drexel). Bensalem, Pa., 1987.
Lua MLA (8ú heag.)Hanley, Boniface. A Philadelphia Story (Katharine Drexel). Bensalem, Pa., 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.