Chester A. Crocker, Fen Osler Hampson, editor
United States Institute of Peace Press, 2001
Buku Teks
Merrills, J.G., author
Cambridge University Press, 1995
Buku Teks
Merrills, J.G., author
Sweet and Maxwell, 1984
Buku Teks
Harvard Business School, 2000
Buku Teks
Harvard Business School Press, 2000
Buku Teks