APA Edition Citation

Sagan, C., & Leonard, J. N. (1966). Planets. Time-Life Books.

Chicago Edition Citation

Sagan, Carl, and Jonathan Norton Leonard. Planets. Alexandria: Time-Life Books, 1966.

MLA Edition Citation

Sagan, Carl, and Jonathan Norton Leonard. Planets. Time-Life Books, 1966.

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