1. Concise Encyclopædia Britannica,1986
2. Illustrated encyclopaedia of science and technology;Editorial Board of Illustrated Encyclopaedia of Science and Technology,1985
3. Xinhua dictionary;Editorial Board of Xinhua Chinese Dictionary,2013
4. Longman dictionary of contemporary English;Pearson Education Publishing Co., Ltd.,2004
5. Climate change and the energy problem: Physical science and economics perspective;GOODSTEIN,2018