Limbong, Nengsih Irma Mahda Dia Boru, author
2019
UI - Skripsi Membership
Osgood, Cornelius
The University of Arizona Press, 1975
Buku Teks
Tan, Chwee Huat, author
Saw Centre Financial Studies, NUS Business School, 2007
Buku Teks
John Wiley & Sons, 2014
Buku Teks
Clewlow, Carol, author
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Buku Referensi