Ellul, Jacques
Vintage Books, 1954
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Thomas, R. Roosevelt, author
American Management Association, 2006
eBooks
Gilbert, Rodney
John Murray, 1926
Buku Teks
Hacker, Andrew , author
St. Martin's Griffin, 2011
Buku Teks
Stiglitz, Joseph E., author
W.W. Norton, 2012
Buku Teks