Kalchev, Kamen
Sofia Foreign Languages Press 1965
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
Hamilton, Mark, author
Neo-tech books, 2000
Buku Teks