APA Style
Arny, Thomas.. (2006).
Explorations :an introduction to astronomy 4th Ed. (4th ed.).
Boston ::
McGraw-Hill.
Chicago Style
Arny, Thomas..
Explorations :an introduction to astronomy 4th Ed..
4th ed.
Boston ::
McGraw-Hill,
2006.
Text.
MLA Style
Arny, Thomas..
Explorations :an introduction to astronomy 4th Ed..
4th ed.
Boston ::
McGraw-Hill,
2006.
Text.
Turabian Style
Arny, Thomas..
Explorations :an introduction to astronomy 4th Ed..
4th ed.
Boston ::
McGraw-Hill,
2006.
Print.