Lewis, J. S. (1996). Rain of iron and ice: The very real threat of comet and asteroid bombardment. Addison-Wesley.
Chicago-Zitierstil (17. Ausg.)Lewis, John S. Rain of Iron and Ice: The Very Real Threat of Comet and Asteroid Bombardment. Reading, Massachussetts: Addison-Wesley, 1996.
MLA-Zitierstil (9. Ausg.)Lewis, John S. Rain of Iron and Ice: The Very Real Threat of Comet and Asteroid Bombardment. Addison-Wesley, 1996.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.