Malmstrom, Jean
Dialects USA
National Council of Teachers of English , 1963
 Buku Teks
InfoUSA : information USA
US. Department of State, 2005
 Multimedia
InfoUSA : information USA
US. Department of State, 2005
 Multimedia
Kislov, A.
USA and the islamic world
Sterling Publishers Private, 1984
 Buku Teks
Finegan, Edward
Language in the USA: themes for the twenty-first century
Cambridge University Press, 2006
 Buku Teks