Steel, D. (1995). Rogue asteroids and doomsday comets: The search for the million megaton menace that threatens life on earth. Wiley.
Style de citation Chicago (17e éd.)Steel, Duncan. Rogue Asteroids and Doomsday Comets: The Search for the Million Megaton Menace That Threatens Life on Earth. New York: Wiley, 1995.
Style de citation MLA (9e éd.)Steel, Duncan. Rogue Asteroids and Doomsday Comets: The Search for the Million Megaton Menace That Threatens Life on Earth. Wiley, 1995.
Attention : ces citations peuvent ne pas être correctes à 100%.