Yayasan Proklamasi, [date of publication not identified]
Buku Teks
Stern, Robert W., 1933-
Cambridge University Press, 2003
Buku Teks
Vernon, Raymond
Committee for Economic Development, 1954
Buku Teks
Institute Studies, 1984
Buku Teks
edited by Andrew Blasko, Diana Januauskiene
Council for Research in Values and Philosophy, 2008
Buku Teks