by the editor of Fortune
Prentice-Hall, 1961
Buku Teks SO
Fredericks, Pierce
E.P. Dutton, 1960
Buku Teks SO
Taylor, F. Sherwood
W.W. Norton, 1963
Buku Teks SO
Time Asia, 2011
Majalah, Jurnal, Buletin
edited by Pieter Honig and Frans Verdoorn
Board for the Netherlands Indies, 1945
Buku Referensi