Farid Poniman, author
Hikmah Zaman Baru, 2006
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Poniman, Farid
Hikmah, 2006
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Silalahi, Darwin, author
Kepustakaan Populer Gramedia, 2012
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Myers, Kevin, author
MIC Publishing, 2014
Buku Teks
Veithzal Rivai Zainal, author
RajaGrafindo Persada, 2007
Buku Teks