Oxley, Harold
Gunung Mulia, 1993
Buku Teks
OBrien, Eugene J.
E & FN spon, 1999
Buku Teks
Raden Panji Natarata
[publisher not identified], [date of publication not identified]
Naskah
Smith, R. C.
Wiley , 1968
Buku Teks SO
Paradis, Emmanuel
[Springer, ], 2012
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