Holcombe, Arthur N.
The Middle classes in American politics / Arthur N. Holcombe
Harvard University Press, 1940
 Buku Teks
Lewis, Roy
English middle classes / Roy Lewis
Penguin Books, 1949
 Buku Teks SO
Klinken, Gerry van
The Making of Middle Indonesia : Kelas menengah di Kota Kupang, 1930-an - 1980-an = The making of middle Indonesia : middle classes in Kupang town, 1930s-1980s
Yayasan Pustaka Obor Indonesia, 2015
 Buku Teks SO
Banks, J. A.
Prosperity and parenthood: a study of fanty planning among the victorian middle classes / J.A. Banks
Routledge & Kegan Paul Limited, 1954
 Buku Teks SO
Social contracts under stress; the middle classes of America, Europe, and Japan at the turn of the century
Olvier Zunz [and others], editor
Russel Sage Foundation, 2001
 Buku Teks SO