edited and transcribed by G.E. Pointon
Oxford University Press, 1990
Buku Referensi
Angus and Robertson, 1957
Buku Teks SO
Malalasekera, G.P.
Luzac , 1960
Buku Referensi
edited by Gabriele vom Bruck and Barbara Bodenhorn
Cambridge University Press, 2006
Buku Teks SO
M. Gugah Patria
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1993
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