Talbot, Phillips
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Buku Teks
Griffith, Martin
Routledge, 2002
Buku Teks
edited by Beth A. Simmons and Richard H. Steinberg
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Buku Teks
Bombay : Oxford Universty Press
Majalah, Jurnal, Buletin
Gupta, Sisir
Asia Publishing House, 1966
Buku Teks