Artikel Jurnal
Puspa Maharani, author
Universitas Indonesia, 2012
UI - Tesis (Open)
Hunter, Eric J., author
Library Association, 1991
Buku Teks
Kritzer, Albert H., author
Kluwer Law and Taxation Publishers, 1989
Buku Teks
Camm, F. J., editor
George Newnes Limited, 1960
Buku Referensi