Цитирование APA (7-е изд.)
Barna, G. (1991). User friendly churches: What Christians need to know about the church. Regals Books.
Цитирование в стиле Чикаго (17-е изд.)
Barna, George. User Friendly Churches: What Christians Need to Know About the Church. California: Regals Books, 1991.
Цитирование MLA (9-е изд.)
Barna, George. User Friendly Churches: What Christians Need to Know About the Church. Regals Books, 1991.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.