APA Style
Purba, Juniar, Murlianti, Sri, Nanang, Martinus. ().
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Chicago Style
Purba, Juniar, Murlianti, Sri, Nanang, Martinus.
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MLA Style
Purba, Juniar, Murlianti, Sri, Nanang, Martinus.
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Turabian Style
Purba, Juniar, Murlianti, Sri, Nanang, Martinus.
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