Hance, William A., author
Columbia University Press, 1970
Buku Teks
Browne, G.S., author
F.W. Chesire, 1960
Buku Teks
edited by John C. Caldwell and Chukuka Okonjo
Longmans, Green, 1968
Buku Teks
Kartomo Wirosuhardjo, author
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 1983
UI - Disertasi (Membership)
edited by Stanislaw Grodz, Gina Gertrud Smith
Brill, 2014
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