Indonesian Linguistics Society, 2012
Majalah, Jurnal, Buletin
Corder, Stephen Pit, editor
Penguin Books , 1973
Buku Teks
Hunston, Susan
Cambridge University Press,, 2006
Buku Teks
Ellis, Sue, editor
Cambridge University Press, 2011
eBooks
Lado, Robert
University of Michigan, 1957
Buku Teks