Johansen, Bob
Leaders make the future : ten new leadership skills for an uncertain world
Berrett-Koehler, 2012
 Buku Teks
LeBlanc, Robin M.
Bicycle citizens the political world of the Japanese housewife
University of California Press, 1999
 Buku Teks SO
The new encyclopedia of world geography
foreword by Emrys Jones
Octopus Books, 1978
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New horizons world guide
edited by Gerald W. Whitted
Pan American World Airways, 1971
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Huxley, Aldous, 1894-1963
Brave new world
Vintage Publishing, 2018
 Buku Teks SO