Pusat Studi Hukum Tata Negara, 2004
Buku Teks SO
Universitas Indonesia, 1995
UI - Skripsi Membership
Amien Rahardjo
Fakultas Teknik Universitas Indonesia, [date of publication not identified]
UI - Laporan Penelitian
Adi Surjosatyo
UI-Press, 2014
UI - Pidato
Retnowulan Sopiyani
Fakultas Hukum Universitas Indonesia, 2021
UI - Tesis Membership