Gaya APA
ARNY, T, T., Schneider, S, E. (2006).
Explorations: An Introduction to Astronomy (ED. 5).
New York:
McGrawe-Hill.
Gaya MLA
ARNY, Thomas, T.., Schneider, Stephen, E..
"Explorations: An Introduction to Astronomy".
ED. 5
New York:
McGrawe-Hill,
2006.
Text.