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Buku Teks
Cassen, R.H.
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Buku Teks SO
Kar, Sabyasachi
Palgrave Macmillan, 2016
Buku Teks
Manalu, Abby Gina Boang, supervisor
Fakultas Ilmu Pengetahuan Budaya Universitas Indonesia, 2015
UI - Tesis Membership
editors, Subroto Roy and William E. James
Sage, 1992
Buku Teks SO