APA (7th ed.) Citation

Dunlap, R. A. (2015). Sustainable energy. Cengage Learning.

Chicago Style (17th ed.) Citation

Dunlap, R. A. Sustainable Energy. Stamford, Connecticut: Cengage Learning, 2015.

MLA (9th ed.) Citation

Dunlap, R. A. Sustainable Energy. Cengage Learning, 2015.