Kelsen, Hans
Introduction to the problems of legal theory
Clarendon Press Oxford, 1992
 Buku Teks
Finch, John
Introduction to legal theory
Sweet & Maxwell, 1970
 Buku Teks
Ward, Ian
Introduction to critical legal theory
Routledge. Cavendish. Taylor & Francis Group, 2004
 Buku Teks
Joseph, Raz
The concept of a legal system an introduction to the theory of legal system
Oxford Clarendon Press, 1970
 Buku Teks
Raz, Joseph
The concept of a legal system; An introduction to the theory of legal system /Raz, Joseph;
Clarendon Press, 1970
 Buku Teks