edited by Ralph Fasold and Jeff Connor-Linton
Cambridge University Press, 2006
Buku Teks
Hazen, Kirk
Massachusetts : Wiley Blackwell, 2015
Buku Teks
Hughes, John P.
Random House, 1966
Buku Teks
Fromkin, Victoria A.
Holt, Rinehart and Winston, 1981
Buku Teks
Huck, Geoffrey J., 1944-
Routledge , 1996
Buku Teks