C. S. Hammond and Company
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Buku Teks
C.S. Hammond , 1961
Buku Referensi
Nita Kurniati
Fitrama Sempana, 2007
Buku Referensi
Rachmat Bratamidjaja, Sutjipto, advisory editors; Ensiklopedi Indonesia
Ichtiar Baru Van Hoeve, 1990
Buku Referensi
Wiegand, Patrick
Oxford University Press, 1994
Buku Teks