Universitas Indonesia, 2010
UI - Skripsi (Open)
Adami Chazawi, author
Radja Grafindo Persada, 2005
Buku Teks
Marpaung, Leden, author
Sinar Grafika, 2005
Buku Teks
Adami Chazawi, author
RajaGrafindo Persada, 2007
Buku Teks
Addison, Neil, author
Blackstone Press Limited, 1998
Buku Teks