APA (7th ed.) Citation

Foley, G. (1981). The energy question (2nd ed.). Penguin.

Chicago Style (17th ed.) Citation

Foley, Gerald. The Energy Question. 2nd ed. Harmondsworth, Middlesex: Penguin, 1981.

MLA (9th ed.) Citation

Foley, Gerald. The Energy Question. 2nd ed. Penguin, 1981.