APA
Sagan C., . (1996). The Demon-haunted World. New york: Ballantine books.
Chicago
Sagan Carl, . 1996. The Demon-haunted World. New york: Ballantine books.
Harvard
Sagan C., . (1996). The Demon-haunted World. New york: Ballantine books.
MLA
Sagan Carl, . The Demon-haunted World. New york: Ballantine books. 1996.