APA Edition Citation

Velikovsky,Immanuel. (1977). Worlds in collision. Pocket books.

Chicago Edition Citation

Velikovsky,Immanuel. Worlds in Collision. New York: Pocket books, 1977.

MLA Edition Citation

Velikovsky,Immanuel. Worlds in Collision. Pocket books, 1977.

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