Coogan, A. F. (1953). Spiritual steps to Christmas. Bruce Pub. Co..
Lua i Stíl Chicago (17ú heag.)Coogan, Aloysius F. Spiritual Steps to Christmas. Milwaukee: Bruce Pub. Co., 1953.
Lua MLA (8ú heag.)Coogan, Aloysius F. Spiritual Steps to Christmas. Bruce Pub. Co., 1953.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.