Hallett, P. H. (1955). What is a catholic? The Macmillan.
Lua i Stíl Chicago (17ú heag.)Hallett, Paul H. What Is a Catholic? The Macmillan, 1955.
Lua MLA (9ú heag.)Hallett, Paul H. What Is a Catholic? The Macmillan, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.