Berlitz, Charles
Without a trace
Granada Publishing, 1977
 Buku Teks
Timerman, Jacobo
Prisoner without a name, cell without a number
Vintage Books , 1982
 Buku Teks
Johnson, Allan G.
Social statistics without tears
McGraw-Hil, 1997
 Buku Teks
Auerbach, Jerold S.
Justice without law
Oxford University Press, 1983
 Buku Teks
Mitchell, David A.
Control without bureaucracy
McGraw-Hill , c.1979
 Buku Teks