Barbour, I. G. Technology, environment, and human values. Praeger.
Chicago Style (17th ed.) ZitazioaBarbour, Ian G. Technology, Environment, and Human Values. London: Praeger.
MLA (9th ed.) ZitazioaBarbour, Ian G. Technology, Environment, and Human Values. Praeger.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.