Frellesvig, Bjark, author
Cambridge University Press, 2010
Buku Teks
Crowley, Tony, author
Routledge, 1996
Buku Teks
Vinokur, G.O. (Grigori Osipovich), 1896-1947, author
Cambrigde University Press , 2010
Buku Teks
Takada, Noriko, author
Macmillan, 1995
Buku Teks
Alfonso, Anthony, author
Sophia University LL Center of Applied Linguistics, 1980
Buku Teks