Παραπομπή APA

Sheldon, S. (2017). The doomsday conspiracy (1st.). Morrow.

Παραπομπή Chicago Style

Sheldon, Sidney. The Doomsday Conspiracy. 1st. New York: Morrow, 2017.

Παραπομπή MLA

Sheldon, Sidney. The Doomsday Conspiracy. 1st. Morrow, 2017.