Crowley, Tony
Routledge, 1996
Buku Teks
Vinokur, Grigori Osipovich, 1896-1947
Cambrigde University Press , 2010
Buku Teks
Noriko Takada
Macmillan, 1995
Buku Teks
Alfonso, Anthony
Sophia University LL Center of Applied Linguistics, 1980
Buku Teks
Miller, Roy Andrew
University Press, 1967
Buku Teks