APA (7th ed.) Citation

Kallen, S. A. (2005). What energy sources should be pursued? Greenhaven Press.

Chicago Style (17th ed.) Citation

Kallen, Stuart A. What Energy Sources Should Be Pursued? Detroit: Greenhaven Press, 2005.

MLA (9th ed.) Citation

Kallen, Stuart A. What Energy Sources Should Be Pursued? Greenhaven Press, 2005.