Moleong, Lexy J., author
Remaja Rosdakarya, 1991
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Sugiyono, author
Alfabeta, 2007
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Moleong, Lexy J., author
Remaja Rosdakarya, 2005
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Moleong, Lexy J., author
Remaja Rosdakarya, 2001
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Emzir, author
RajaGrafindo Persada, 2012
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