Hopfenbeck, W. (1993). The green management revolution: Lessons in environmental excellence. Prentice-Hall.
Cita Chicago (17th ed.)Hopfenbeck, Waldemar. The Green Management Revolution: Lessons in Environmental Excellence. New York: Prentice-Hall, 1993.
Cita MLA (9th ed.)Hopfenbeck, Waldemar. The Green Management Revolution: Lessons in Environmental Excellence. Prentice-Hall, 1993.
Atenció: Aquestes cites poden no estar 100% correctes.