Barros, James
Bumi Aksara, 1990
Buku Teks
edited by James Barros
The Free Press, 1972
Buku Teks
Departement of Public Information - United Nations, 1956
Buku Teks
UNESCO, 1951
Buku Teks
Coyle, David Cushman, 1887-1969, author
The New Americanan Library, 1962
Buku Teks