Freeman, H. M. (1995). Cleaner technologies and cleaner products for sustainable development. Springer-Verlag.
芝加哥风格引文Freeman, Harry M. Cleaner Technologies and Cleaner Products for Sustainable Development. New York: Springer-Verlag, 1995.
MLA引文Freeman, Harry M. Cleaner Technologies and Cleaner Products for Sustainable Development. Springer-Verlag, 1995.
警告：这些引文格式不一定是100％准确.