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Gaya APA
Circle in a box. (2009).
:
Mathematical Sciences Research Institute.
Gaya Chicago
Circle in a box.
MSRI mathematical circles library 2.
:
Mathematical Sciences Research Institute,
2009.
Text.
Gaya MLA
Circle in a box.
MSRI mathematical circles library 2.
:
Mathematical Sciences Research Institute,
2009.
Text.
Gaya Turabian
Circle in a box.
:
Mathematical Sciences Research Institute,
2009.
Print.