Washington : Georgetown University Press
Majalah, Jurnal, Buletin
edited by Malcolm Coulthard and Alison Johnson
RoutledgeI, 2013
Buku Teks
Breva-Claramonte, Manuel
Amsterdam John Benjamins Publishing 1983
Buku Teks
Amsterdam John Benjamins Publishing 1983
Buku Teks
Berlin : Mouton Publishers
Majalah, Jurnal, Buletin