Routledge, 2018
Buku Teks
Tokyo University of Foreign Studies, 2005
Buku Teks
Artikel Jurnal
edited by D.R. Fraser Taylor
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Buku Teks
Anindito Adi Nugroho, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2011
UI - Skripsi (Open)