Staiger, Ralph C., author
UNESCO, 1979
Buku Teks
George Allen & Unwin in association with the Australian Labor Party, 1983
Buku Teks
Ouali, Abdelhamid El
Springer, 2012
eBooks
Russell, Bertrand, 1872-1970, author
Unwin Paperbacks, 1977
Buku Teks
Garland, Hamlin, author
Charles E. Merrill Publishing, 1970
Buku Teks