Headquarters USA
Omnigraphics, 2003
 Buku Teks
Malmstrom, Jean
Dialects USA
National Council of Teachers of English, 1963
 Buku Teks
Malmstrom, Jean
Dialects USA
National Council of Teachers of English , 1963
 Buku Teks
Rediscovering art deco U.S.A.
by Barbara Capitman Baer [and others]
Hennessey & Ingalls, 2002
 Buku Teks
InfoUSA : information USA
US. Department of State, 2005
 Multimedia