Summer Institute of Linguistics (Philippines) : Linguistic Society of the Philippines, 1981
Buku Teks
Noorduyn, J.
KITLV Press, 1991
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Levin, Lennart, author
Almqvist och Wiksell, 1972
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Teeuw, A. (Andries), 1921-, author
Martinus Nijhoff, 1961
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Clark Unioversity Press, 1955
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