United Nations, 1987
Buku Teks
Retherford, Robert D.
East West Center Press, 1985
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Puji Lestari
Fakultas Kesehatan Masyarakat Universitas Indonesia, 2009
UI - Tesis (Open)
Shinta Fitrianti
Fakultas Ekonomi dan Bisnis Universitas Indonesia, 2016
UI - Tesis (Membership)
edited by Gerry E. Hendershot, Paul J. Placek
LexingtonBooks, 1981
Buku Teks