Gaya APA
KOPPES, S, N. (2004).
Killer Rocks From Outer Space : Asteroids, Comets, And Meteorites .
Minneapolis:
Twenty-First Century Books.
Gaya MLA
KOPPES, Steven, N..
"Killer Rocks From Outer Space : Asteroids, Comets, And Meteorites".
Minneapolis:
Twenty-First Century Books,
2004.
Text.