Cambridge University Press, 1965
Majalah, Jurnal, Buletin
Waverly Press, Inc. , Baltimore : Waverly Press
Majalah, Jurnal, Buletin
Edward Arnold ,
Majalah, Jurnal, Buletin
Amsterdam : North-Holland Publishing
Majalah, Jurnal, Buletin
Australia : Applied Linguistics Association of Australia
Majalah, Jurnal, Buletin