Fifty Lessons. (2008). Executing for Results. Harvard Bus.School Pub.
Chicago Style aipamenaFifty Lessons. Executing for Results. Boston: Harvard Bus.School Pub, 2008.
MLA aipamenaFifty Lessons. Executing for Results. Harvard Bus.School Pub, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.