APA (7th ed.) Citation

Hayes, D. (1977). Rays of hope: The transition to a post-petroleum world. Norton.

Chicago Style (17th ed.) Citation

Hayes, Denis. Rays of Hope: The Transition to a Post-petroleum World. New York: Norton, 1977.

MLA (8th ed.) Citation

Hayes, Denis. Rays of Hope: The Transition to a Post-petroleum World. Norton, 1977.

Warning: These citations may not always be 100% accurate.