Artikel Jurnal
Ulil Amri Syafri, author
Rajawali, 2012
Buku Teks
Wedha Aditiawan Mardi, author
Fakultas Teknik Universitas Indonesia, 2000
UI - Skripsi (Membership)
Muhammad Kamil Abdushshamad, author
Media Akbar Sarana, 2003
Buku Teks
Quthan, Mana`ul, author
Rineka Cipta, 1995
Buku Teks