APA (7th ed.) Citation

Denby, E., & Swadkin, C. (1975). Sources of energy. Tyndall.

Chicago Style (17th ed.) Citation

Denby, Erica, and Chris Swadkin. Sources of Energy. [Brighton]: Tyndall, 1975.

MLA (8th ed.) Citation

Denby, Erica, and Chris Swadkin. Sources of Energy. Tyndall, 1975.