Lua APA (7ú heag.)

Halko, J. (1950). Religious census, District of Columbia: General summary. Washington Federation of Churches.

Lua i Stíl Chicago (17ú heag.)

Halko, John. Religious Census, District of Columbia: General Summary. Washington, D.C.: Washington Federation of Churches, 1950.

Lua MLA (8ú heag.)

Halko, John. Religious Census, District of Columbia: General Summary. Washington Federation of Churches, 1950.

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.