edited by John A.S Read edited by
Singapore University Press for SEAMEO Regional Language Centre, 1984
Buku Teks
Dubin, Fraida, author
Cambridge University Press, 1986
Buku Teks
edited by Bernhard Kettemann and Robert N. St. Clair
Gunter Narr Verlag Tubingen, 1980
Buku Teks
Wallace, Michael J., author
Cambridge University Press, 2004
Buku Teks
Lado, Robert, author
University of Michigan, 1957
Buku Teks