Gaya APA
Nawawi, H.
(1992).
Instrumen Penelitian Bidang Sosial
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Yogyakarta:
Gadjah Mada University Press.
Gaya MLA
Nawawi, Hadari.
"Instrumen Penelitian Bidang Sosial".
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Yogyakarta:
Gadjah Mada University Press,
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.