Montgomery, John D., author
Frederick A. Praeger, 1962
Buku Teks
Colbert, Evelyn
Cornell University Press, 1977
Buku Teks
edited by Philip Hirsch and Carol Warren
Routledge , 1998
Buku Teks
Singh, Lalita Prasad
Humanities Press, 1979
Buku Teks
edited by Yew-Foong Hui
Institute of South East Asia Studies, 2013
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