The long road to IRENA, 2009 t.p. (International Renewable Energy Agency) p. 1 (f. Jan. 2009)
Energias renováveis, 2015 t.p. (IRENA) p. 7 (IRENA - Agência Internacional de Energia Renovável)
IRENA www, viewed Aug. 5, 2015 (On 4 April 2011, only three years after the very first conference regarding IRENA was held, the Preparatory Commission of IRENA ceased to exist, and the International Renewable Energy Agency was finally born)