Midley, D. (2005). Golden circle secrets: How to achieve consistent sales success through customer values & expectations. Hoboken, N.J: Wiley.
Chicago Style aipamenaMidley, Dale. Golden Circle Secrets: How to Achieve Consistent Sales Success Through Customer Values & Expectations. Hoboken, N.J: Wiley, 2005.
MLA aipamenaMidley, Dale. Golden Circle Secrets: How to Achieve Consistent Sales Success Through Customer Values & Expectations. Hoboken, N.J: Wiley, 2005.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.