Ricklefs, M.C. [Merle Calvin], 1943-
School of Oriental and African Studies. University of London, 1978
Buku Teks
Anderson, John D.
McGraw-Hill, 1982
Buku Teks SO
Anderson, John D.
McGraw-Hill, c1990
Buku Teks SO
R. Gregg Bruce [and others]
Pearson/Prentice Hall, 2004
Buku Teks SO
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