Barbour, I. G. Technology, environment, and human values. Praeger.
Cita Chicago (17th ed.)Barbour, Ian G. Technology, Environment, and Human Values. London: Praeger.
Cita MLA (9th ed.)Barbour, Ian G. Technology, Environment, and Human Values. Praeger.
Atenció: Aquestes cites poden no estar 100% correctes.