Eddy Damian
Indonesia`s formal legal system : an introduction
Alumni, 1976
 Buku Teks SO
Eddy Damian
Indonesia`s formal legal system: an introduction
Comparative Study of Law, 1972
 Buku Teks SO
Ince, D.C.
An Introduction to discrete mathematics and formal system specification
Clarendon Press, 1988
 Buku Teks SO
Wesley-Smith, Peter
An introduction to the Hongkong legal system
Oxford University Press, 1987
 Buku Teks
Introduction to foreign legal system
sponsored by the American Association of Law Libraries ; edited by Richard A. Danner, Marie-Louise H. Bernal
 Buku Teks