Language and Language Behavior Abstract's
San Diego : Sosiological Abstracts Inc.
Majalah, Jurnal, Buletin
One mind, two language bilingual language processing edited by
Malden Blackwell 2006
Buku Teks
Bahasa pengaruh dan peranannya editor
Jakarta Gramedia 981
Buku Teks
IRAL: International Review of Applied Linguistics in Language Teaching
Julius Groos Verlag, {s.a}
Majalah, Jurnal, Buletin
Language testing
Edward Arnold ,
Majalah, Jurnal, Buletin