COHN MIKE. (2001). KEEP OR SELL YOUR BUSINESS. DEARBORN.
Chicago Style aipamenaCOHN MIKE. KEEP OR SELL YOUR BUSINESS. USA: DEARBORN, 2001.
MLA aipamenaCOHN MIKE. KEEP OR SELL YOUR BUSINESS. DEARBORN, 2001.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.