Duffield, B. (1955). Christmas at Lourdes. The Dramatic Publishing Company.
Lua i Stíl Chicago (17ú heag.)Duffield, Brainerd. Christmas at Lourdes. Chicago: The Dramatic Publishing Company, 1955.
Lua MLA (8ú heag.)Duffield, Brainerd. Christmas at Lourdes. The Dramatic Publishing Company, 1955.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.