Gaya APA
Pocket world in figures. (2011).
London:
Profile Books.
Gaya Chicago
Pocket world in figures.
2012 ed.
London:
Profile Books,
2011.
Text.
Gaya MLA
Pocket world in figures.
2012 ed.
London:
Profile Books,
2011.
Text.
Gaya Turabian
Pocket world in figures.
London:
Profile Books,
2011.
Print.