Stein, Gabriele
Tubiger Beitrage zur Linguistik, 1973
Buku Teks
edited by Mark O. Connor
Oxford University Press, 1989
Buku Teks
Jurgen Georg Backhaus, editor
Springer, 2012
eBooks
edited by Edmund S. Morgan
Prentice-Hall, 1965
Buku Teks
Bartlett, Ruhl
Hill and Wang, 1963
Buku Teks