Richter, Ekkhard-Siegried, author
Edition Leipzig, 1972
Buku Teks
Stevens, Matt, 1982-, author
McGraw-Hill, 2012
Buku Teks
Universitas Indonesia, 2012
UI - Skripsi (Open)
Achmad Firmansyah, author
Fakultas Hukum Universitas Indonesia, 2012
UI - Skripsi (Membership)
Hinze, Jimmie W., author
Pearson - Prentice Hall, 2008
Buku Teks