Gottdiener, M.
Sage, 2010
Buku Teks
edited by Alice O'Connor, Chris Tilly and Lawrence D. Bobo
Russel Sage Foundations, 2001
Buku Teks
Stevenson, Deborah
Open University Press, 2003
Buku Teks
Knox, Paul
Longman, 1996
Buku Teks
Bergel, Egon Ernest
McGraw-Hill, 1955
Buku Teks