Wilbur, Terence H.
Amsterdam John Benjamins B.V. 1977
Buku Teks
London : The Modern Humanities Research Association
Majalah, Jurnal, Buletin
Japan : Linguistics Cirele
Majalah, Jurnal, Buletin
Waverly Press, Inc. , Baltimore : Waverly Press
Majalah, Jurnal, Buletin
Hartmann, Reinhard R.K., author
Tubingen [Gunter Narr verlag] 1973
Buku Teks