APA Style
Hartmann, William K., Impey, Chris. (2002).
Astronomy : the cosmic journey (6th ed).
USA:
Brooks/cole.
Chicago Style
Hartmann, William K., Impey, Chris.
Astronomy : the cosmic journey.
6th ed
USA:
Brooks/cole,
2002.
Textbook.
MLA Style
Hartmann, William K., Impey, Chris.
Astronomy : the cosmic journey.
6th ed
USA:
Brooks/cole,
2002.
Textbook.
Turabian Style
Hartmann, William K., Impey, Chris.
Astronomy : the cosmic journey.
6th ed
USA:
Brooks/cole,
2002.
Textbook.