Oxford University Press, 1954
Buku Teks
Schurmann, Franz, author
Vintage Books, 1967
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans , Green, 1948
Buku Teks
Trevelyan, George Macaulay, 1876-1962, author
Longmans , 1946
Buku Teks
Stein, Gabriele
Tubiger Beitrage zur Linguistik, 1973
Buku Teks