Grierson, Herbert John Clifford, Sir, 1866-1960, author
Chatto and Windus, 1950
Buku Teks
Kroeber, Karl, author
Harper and Row, 1965
Buku Teks
Kennedy, Charles W., author
Oxford University Press, 1943
Buku Teks
Allen, Walter
E.P. Dutton, 1954
Buku Teks
Allen, Walter
Penguin Books, 1954
Buku Teks