APA (7th ed.) Citation

Shepherd, W., & Shepherd, D. W. (2008). Energy studies (2., ed., reprinted.). Imperial College Press.

Chicago Style (17th ed.) Citation

Shepherd, William, and D. W. Shepherd. Energy Studies. 2., ed., reprinted. London: Imperial College Press, 2008.

MLA (9th ed.) Citation

Shepherd, William, and D. W. Shepherd. Energy Studies. 2., ed., reprinted. Imperial College Press, 2008.