1. Antara, (2006). Kandungan logam berat dalam lumpur lapindo meningkat. (the content of poisonous mineral in Mud Volcano increased) Thursday December 14. Retrieved March 21, 2008 from http://www.mediacenter.or.id/pusatdata/27/tahun/2006/bulan/12/tanggal/14/id/1313/.
2. Antara, (2009). Ratusan hektar tambak di Sidoarjo gagal panen (Hundreds of brackish water culture was fail in Sidoarjo). Published 20 June 2009, Retrieved March 2, 2011 from http://www.antara- sumbar.com/id/index.php?sumbar=berita&nkat=nasional&kat=d&d=0&id=33707&judul=ratusan-hektar-tambak-di-sidoarjo- gagal-panen.html Published 20 June 2009.
3. BPK. (2007). Laporan Pemeriksaan Atas Penanganan Semburan Lumpur Panas Sidoarjo (AUDITING Report of THE HOTMUD ERUPTION IN SIDOARJO). The Audit Board of the Republic of Indonesia. Retrieved February 3, 2008 from: http://www.bpk.go.id/doc/hapsem/2007i/disc1/APBN/117_Penanganan_Semburan_Lumpur_Panas_Sidoarjo.pdf.
4. Brahmana. S, Tontowi, Achmad.F, (2007), Dampak Buangan Lumpur Panas Porong-Sidoarjo Terhadap Kualitas Air Kali Porong (The effects of the Porong Hot Mud toward the water quality in Porong river), JSDA. Vol. 3 No. 3 May. Retrieved from: http://isjd.pdii.lipi.go.id/admin/jurnal/3407918.pdf.
5. Budi,K. (2008). BPPT Simpulkan Lumpur Lapindo Bencana Alam (BPPT Concluded That Lapindo Mud is Natural Disaster). Tempointeraktif, Tuesday 18 march. Retrieved May 04, 2008, from: http://www.tempointeraktif.com/hg/nasional/2008/03/18/brk, 20080318-119419,id.html.