1. Amirruddin, 2009. Analisis Pengetahuan, Persepsi dan Sikap Konsumen Terhadap Produk LPG Pertamina Kemasan 3 Kilogram. Studi Kasus di Desa Leuwiliang, Kecamatan Leuwiliang, Kabupaten Bogor, Jawa Barat. Analysis of Consumer's Knowledge, Perception and Attitude Toward Pertamina's Product of 3 Kilogram LPG (Master theses). MB, IPB Bogor.
2. Biomass energy and the poor in the developing countries;Barnes;J. Int. Aff.,1999
3. Barnes, D.F., Qian, U., 1992. Urban Interfuel Substitution, Energy Use and Equity in Developing Countries. World Bank Industry and Energy Department Working Paper, Energy Series Paper 53, Washington, DC.
4. The Urban Household Energy Transition; Energy, Poverty, and the Environment in the Developing World;Barnes,2005
5. Energy poverty in rural Bangladesh;Barnes;Energy Policy,2011