Bloomfield, Leonard
Introduction to the study of language by
Amsterdam John Benjamins Publishing 1983
 Buku Teks
Bloom, Lois
Language development and language disordes
New York John Wiley & Sons 1978
 Buku Teks
Language testing
Edward Arnold ,
 Majalah, Jurnal, Buletin
Language and Language Behavior Abstract's
San Diego : Sosiological Abstracts Inc.
 Majalah, Jurnal, Buletin
The Modern Language Review
London : The Modern Humanities Research Association
 Majalah, Jurnal, Buletin