Barrow, John D.
Impossibility : the limits of science and the science of limits
Oxford University Press , 1998
 Buku Teks SO
Mass customization: challenges and limits
Manajemen Usahawan Indonesia, XXXII (06) Juni 2003: 49-55, 2003
 Artikel Jurnal
Packer, Herbert L.
The Limits of the criminal sanction
Stanford University Press, 1968
 Buku Teks
Berliner, Baruch
Limits of insurability of risks
Prentice-Hall, 1982
 Buku Teks
Krishnamurti, Jiddu, 1895-1986
The limits of thought discussions
New York Routledge , 1999
 Buku Teks SO