APA Style
Duncan, F. U., United States. Department , Washington DC.. ().
: [computer file]. .
:
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Chicago Style
Duncan, F. U., United States. Department , Washington DC..
: [computer file]..
:
,
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MLA Style
Duncan, F. U., United States. Department , Washington DC..
: [computer file]..
:
,
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Turabian Style
Duncan, F. U., United States. Department , Washington DC..
: [computer file]..
:
,
.
.