Cita APA

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

Citación estilo Chicago

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

Cita MLA

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

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