edited by Daljit Singh and Lorraine C. Salazar
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Buku Teks
editor, Leo Suryadinata
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Buku Teks
Lee Kuan Yew School of Public Policy, 2011
Majalah, Jurnal, Buletin
Tarling, Nicholas, author
New Zealand Asia Institute , 2000
Buku Teks
Solidum, Estrella D., author
University of the Philippines Press, 1974
Buku Teks