Graham, R. A. (1968). The Pope and Poland in World War Two. London.
Lua i Stíl Chicago (17ú heag.)Graham, Robert A. The Pope and Poland in World War Two. London, 1968.
Lua MLA (8ú heag.)Graham, Robert A. The Pope and Poland in World War Two. London, 1968.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.