Gaya APA
Mangkulo, Hengky Alexander, Solution, Winpec. (2010).
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Jakarta:
Gramedia.
Gaya Chicago
Mangkulo, Hengky Alexander, Solution, Winpec.
Facebook for sekolahan.
Jakarta:
Gramedia,
2010.
Koleksi Buku Teks.
Gaya MLA
Mangkulo, Hengky Alexander, Solution, Winpec.
Facebook for sekolahan.
Jakarta:
Gramedia,
2010.
Koleksi Buku Teks.
Gaya Turabian
Mangkulo, Hengky Alexander, Solution, Winpec.
Facebook for sekolahan.
Jakarta:
Gramedia,
2010.
Koleksi Buku Teks.