Epstein, Irwin, author
Columbia Univ. Press, 1977
Buku Teks
DePoy, Elizabeth, author
Brooks/Cole-Thomson Learning, 2003
Buku Teks
Grinnell, Richard M., author
Oxford University Press, 2018
Buku Teks
Shaw, Ian, author
Sage, 2001
Buku Teks
Russell Sage Foundation, 1971
Buku Teks