APA (7th ed.) Zitazioa

Barna, G. (1992). The Barna report 1992-93: An annual survey of ... Regal books.

Chicago Style (17th ed.) Zitazioa

Barna, George. The Barna Report 1992-93: An Annual Survey of ... Ventura: Regal books, 1992.

MLA (9th ed.) Zitazioa

Barna, George. The Barna Report 1992-93: An Annual Survey of ... Regal books, 1992.