Lua APA (7ú heag.)
Barna, G. (1991). User friendly churches: What Christians need to know about the church. Regals Books.
Lua i Stíl Chicago (17ú heag.)
Barna, George. User Friendly Churches: What Christians Need to Know About the Church. California: Regals Books, 1991.
Lua MLA (9ú heag.)
Barna, George. User Friendly Churches: What Christians Need to Know About the Church. Regals Books, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.