APA Style
Firth, Rachel. (2004).
Astronomy .
London:
Usborne Publishing Ltd.
Chicago Style
Firth, Rachel.
Astronomy.
London:
Usborne Publishing Ltd,
2004.
Text.
MLA Style
Firth, Rachel.
Astronomy.
London:
Usborne Publishing Ltd,
2004.
Text.
Turabian Style
Firth, Rachel.
Astronomy.
London:
Usborne Publishing Ltd,
2004.
Print.