edited by Sunil Mani, Henny Romijn
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Buku Teks
Unesco Press, 1975
Buku Teks
Tang, John
Asian Institue of Technology, 1989
Buku Referensi
Gelfand, M.A.
Unesco, 1971
Buku Teks SO
Sommerlad, E.Lloyd
University Press, 1966
Buku Teks SO