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Gaya APA
The Handy Astronomy Answer Book. (2008).
:
.
Gaya Chicago
The Handy Astronomy Answer Book.
.
:
,
2008.
Text.
Gaya MLA
The Handy Astronomy Answer Book.
.
:
,
2008.
Text.
Gaya Turabian
The Handy Astronomy Answer Book.
:
,
2008.
Print.