Dunlap, R. A. (2019). Sustainable energy. Australia: Cengage Learning.
Trích dẫn kiểu ChicagoDunlap, Richard A. Sustainable Energy. Australia: Cengage Learning, 2019.
MLA引文Dunlap, Richard A. Sustainable Energy. Australia: Cengage Learning, 2019.
警告：這些引文格式不一定是100％准確.