Hendy Mustiko Aji
UPP STIM YKPN, 2019
Buku Teks
Buchari Alma
Alfabeta , 2014
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Buchari Alma
Alfabeta, 2007
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Trisakti International Center for Service studies FE-Usakti, 2006
Majalah, Jurnal, Buletin
I Made Sudana
Airlangga University Press, 2009
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