Paxton, John, author
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Buku Referensi
edited by Richard M. Buxbaum ... [et al.]
W. de Gruyter, 1991
Buku Teks
Mayss, Abla, author
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Buku Referensi
edited by Alex E. Fernandez Jilberto and Barbara Hogenboom
Routledge, 2007
Buku Teks
ASEAN Secretariat, 2000
Buku Teks