Gaya APA
Carroll, B, W., Ostlie, D, A. (2007).
An Introduction to Modern Astrophysics (2).
Amerika:
Pearson Education South Asia Pte Ltd.
Gaya MLA
Carroll, Bradley, W., Ostlie, Dale, A.
"An Introduction to Modern Astrophysics".
2
Amerika:
Pearson Education South Asia Pte Ltd,
2007.
Text.