(2006). RETAINING YOUR BEST PEOPLE. HARVARD BUSINESS REVIEW PRESS.
Chicago Style aipamenaRETAINING YOUR BEST PEOPLE. BOSTON: HARVARD BUSINESS REVIEW PRESS, 2006.
MLA aipamenaRETAINING YOUR BEST PEOPLE. HARVARD BUSINESS REVIEW PRESS, 2006.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.