ROLAND. (1997). PROJECT MANAGEMENT: THE PEOPLE CHALLENGE. JAICO PUBLISHING HOUSE.
Chicago Style aipamenaROLAND. PROJECT MANAGEMENT: THE PEOPLE CHALLENGE. MUMBAI: JAICO PUBLISHING HOUSE, 1997.
MLA aipamenaROLAND. PROJECT MANAGEMENT: THE PEOPLE CHALLENGE. JAICO PUBLISHING HOUSE, 1997.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.