FREEMAN-BELL, G. (1996). Management In Engineering. Prentice-Hall.
Chicago Style aipamenaFREEMAN-BELL, Gail. Management In Engineering. Prentice-Hall, 1996.
MLA aipamenaFREEMAN-BELL, Gail. Management In Engineering. Prentice-Hall, 1996.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.