Ward, Russel Braddock
Macmillan Co. of Australia, 1988
Buku Teks
Ward, Russel, author
Prentice-Hall, 1965
Buku Teks
Ward, Russel, author
Heinemann educational Australia, 1977
Buku Teks
Ward, Russel, author
Macmillan, 1987
Buku Teks
Russell, Bertrand, 1872-1970, author
Unwin Paperbacks, 1977
Buku Teks