Derbolav, Josef
Search for a new humanity: a dialogue
I.B. Tauris, 2008
 Buku Teks SO
Koopman, Bernard Osgood
Search and screening : general principles with historical applications
Pergamon Press, 1980
 Buku Teks
Harris, Myra A.
Legal research : fundamental principles
Prentice-Hall, 1997
 Buku Teks
Yetty Komalasari Dewi
In search of legal foundation for indonesian family firms
Faculty of Law University of Indonesia, 2016
 Artikel Jurnal
Packer, Herbert L.
New directions in legal education
McGraw-Hill, 1973
 Buku Teks