==References====External links==*Bush, Robin (2009) "Nahdlatul Ulama and the struggle for power within Islam and politics in Indonesia" Institute of Southeast Asian Studies, ISBN 981-230-876-8*Feith, Herbert (2007) "The Decline of Constitutional Democracy in Indonesia" Equinox Publishing (Asia) Pte Ltd, ISBN 978-9-79378-045-0*Nasution, Adnan Buyung (1995) "Aspirasi Pemerintahan Konstitutional di Indonesia: Studi Sosio-Legal atas Konstituante 1956-1959 (Translation of The Aspiration for Constitutional Government in Indonesia: A Socio-Legal Study of the Indonesian Konstituante 1956-1959" Pustaka Utama Grafiti, Jakarta ISBN 978-9-79416-218-7*Ricklefs, M.C.
*Bush, Robin (2009) "Nahdlatul Ulama and the struggle for power within Islam and politics in Indonesia" Institute of Southeast Asian Studies, ISBN 981-230-876-8* Feith, Herbert (2007) "The Decline of Constitutional Democracy in Indonesia " Equinox Publishing (Asia) Pte Ltd, ISBN 979-3780-45-2* Nasution, Adnan Buyung (1995) "Aspirasi Pemerintahan Konstitutional di Indonesia: Studi Sosio-Legal atas Konstituante 1956-1956 (Translation of The Aspiration for Constitutional Government in Indonesia: A Socio-Legal Study of the Indonesian Konstituante 1956-1959" *Pustaka Utama Grafiti, Jakarta ISBN 979-444-384-0* Ricklefs, M.C.