Gaya APA

Knocke, M, M. (2005). From blue moons to black holes : a basic guide to astronomy, outer space, and space exploration . New York: Prometheus Books.

Gaya MLA

Knocke, Melanie, Melton. "From blue moons to black holes : a basic guide to astronomy, outer space, and space exploration". New York: Prometheus Books, 2005. Text.