Hallett, P. H. (1961). What is a catholic? Collier books.
Lua i Stíl Chicago (17ú heag.)Hallett, Paul H. What Is a Catholic? New York: Collier books, 1961.
Lua MLA (9ú heag.)Hallett, Paul H. What Is a Catholic? Collier books, 1961.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.