Tokyo University of Foreign Studies, 2005
Buku Teks
Artikel Jurnal
edited by D.R. Fraser Taylor
John Wiley & Sons, 1980
Buku Teks
Anindito Adi Nugroho, author
Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2011
UI - Skripsi (Open)
Clarke, Keith C., author
Prentice-Hall, 1990
Buku Teks