Kalchev, Kamen
Sofia Foreign Languages Press 1965
Buku Teks
Noel, Emile
The Institute of the European Community, 1979
Buku Teks
Wilding, Michael, author
University of Queensland Press, 1974
Buku Teks
report of the Council for Aboriginal Reconciliation 1991-94 to Federal Parliament
Australian Government Publishing Service, 1994
Buku Teks
Steward, John, author
McGraw-Hill, 1993
Buku Teks