APA Style
Sagan, Scott D., Enver, Khurshid Ahmed. ().
Omar .
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Chicago Style
Sagan, Scott D., Enver, Khurshid Ahmed.
Omar.
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,
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.
MLA Style
Sagan, Scott D., Enver, Khurshid Ahmed.
Omar.
:
,
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.
Turabian Style
Sagan, Scott D., Enver, Khurshid Ahmed.
Omar.
:
,
.
.