Berke, C. (1996). Entrepreneur magazine: Successful advertising for small businesses. John Wiley.
Chicago Style (17th ed.) ZitazioaBerke, Conrad. Entrepreneur Magazine: Successful Advertising for Small Businesses. New York: John Wiley, 1996.
MLA (9th ed.) ZitazioaBerke, Conrad. Entrepreneur Magazine: Successful Advertising for Small Businesses. John Wiley, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.