Heaton, G., Repetto, G., & Sobin, R. (1989). Transforming technology: An agenda for environmentally sustainable growth in the 21st century. World Resources Institute.
Cita Chicago (17th ed.)Heaton, George, George Repetto, i Rodney Sobin. Transforming Technology: An Agenda for Environmentally Sustainable Growth in the 21st Century. Washington, D.C., USA: World Resources Institute, 1989.
Cita MLA (9th ed.)Heaton, George, et al. Transforming Technology: An Agenda for Environmentally Sustainable Growth in the 21st Century. World Resources Institute, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.