Eitman, David K., author
Perason, 2001
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Pardamean, Sandi, author
2013
UI - Skripsi (Membership)
Rena Maya Cahyanti, author
2014
UI - Skripsi (Membership)
Rembulan Paramita, author
2015
UI - Skripsi (Membership)
Shapiro, Alan C.
John Wiley & Sons, 2003
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