APA Style
Britannica Student Encyclopedia 12 : S. (2010).
London:
Britannica.
Chicago Style
Britannica Student Encyclopedia 12 : S.
.
London:
Britannica,
2010.
.
MLA Style
Britannica Student Encyclopedia 12 : S.
.
London:
Britannica,
2010.
.
Turabian Style
Britannica Student Encyclopedia 12 : S.
London:
Britannica,
2010.
.