1
Published 1987
2
Published 2004
3
by Bhagawati, Jagdish N, 1934-
Published 1966
4
by Fieldhouse, D.K, 1925
Published 1999
5
by Nafziger, E. Wayne
Published 1984
6
by Ahrens, Joachim, 1963-
Published 2002
7
Published 1999
8
by Kingsbury, Damien
Published 2016