Sherman, Jerry
Farrchila Publications, 1979
Buku Teks
Wright, A. E.
Constable, 1921
Buku Teks
Mens, A.J., author
Bhratara Karya Aksara, 1984
Buku Teks
Collin, C.H,
Butterworth-Heinemann, 1995
Buku Teks
Achmad Irfan, author
2000
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