Merryman, John Henry, author
Comaparative law : Western European and Latin American legal systems : cases and materials
Bobbs-Merril, 1978
 Buku Teks
Kelsen, Hans, author
Hukum dan logika = Essays in legal and moral philosophy
Alumni, 1982
 Buku Teks
Kelsen, Hans, author
Hukum dan logika = Essays in legal and moral philosophy
Alumni, 2006
 Buku Teks
Beatty, Jeffrey F., author
Legal environment
South Western Cengage Learning, 2011
 Buku Teks
Romano, Santi, 1875-1947, author
The legal order
Routledge, 2017
 Buku Teks