Thomann, Lars, author
VS Verlag, 2011
eBooks
Gregor Gall, Adrian Wilkinson, Richard Hurd, editor
Edward Elgar, 2011
Buku Teks
Kiss, Tibar
Akademiai Kiado, 1971
Buku Teks
Harvard Business School Press, 2001
Buku Teks
Jenks, C. Wilfred
Stevens & Sons Limited, 1960
Buku Teks