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Universiti Malaya, 1974
Buku Teks
Everett, Brian S.
Indonesia Business Links, 2002
Buku Teks
Everett, Brian S.
Indonesia Business Links, 2002
Buku Teks
Maria Laksmi Indriyastuti, author
2015
UI - Tugas Akhir
edited by Anthony H. Johns
Cornell University , 1958
Buku Teks