Graham, Stephen. (1994). Energy research in developing countries. International Development Research Centre.
Citazione stile Chigago Style (17a edizione)Graham, Stephen. Energy Research in Developing Countries. Ottawa, Canada: International Development Research Centre, 1994.
Citatione MLA (9a ed.)Graham, Stephen. Energy Research in Developing Countries. International Development Research Centre, 1994.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.