Valenzuela, Javier
New York Cambridge University Press, 2017
Buku Teks
Jackson, Peter
Routledge, 1995
Buku Teks
Cruse, Alan
Oxford University Press, 2013
Buku Teks
Hofmann, Th. R.
London Longman 1995,
Buku Teks
Cruse, Alan
Oxford University Press, 2004
Buku Teks