Capehart, B. L., Turner, W. C., Kennedy, W. J., Turner, W. C., & Kennedy, W. J. (2003). Guide to energy management (4th ed.). Liburn, GA. : New York: The Fairmont Press, Inc. ; Marcel Dekker, Inc.

Capehart, Barney L., Wayne C. Turner, William J. Kennedy, Wayne C. Turner, and William J. Kennedy. Guide to Energy Management. 4th ed. Liburn, GA. : New York: The Fairmont Press, Inc. ; Marcel Dekker, Inc, 2003.

Capehart, Barney L., et al. Guide to Energy Management. 4th ed. Liburn, GA. : New York: The Fairmont Press, Inc. ; Marcel Dekker, Inc, 2003.