Barna, G. (1992). The Barna report 1992-93: An annual survey of ... Regal books.
Cita Chicago (17th ed.)Barna, George. The Barna Report 1992-93: An Annual Survey of ... Ventura: Regal books, 1992.
Cita MLA (9th ed.)Barna, George. The Barna Report 1992-93: An Annual Survey of ... Regal books, 1992.
Atenció: Aquestes cites poden no estar 100% correctes.