OPEC Fund for International Development, International Institute for Applied Systems Analysis.4, & Fischer, G. (2009). Biofuels and food security. OPEC Fund for International Development.
Cita Chicago (17th ed.)OPEC Fund for International Development, International Institute for Applied Systems Analysis.4, i Gunther Fischer. Biofuels and Food Security. Vienna, Austria: OPEC Fund for International Development, 2009.
Cita MLA (9th ed.)OPEC Fund for International Development, et al. Biofuels and Food Security. OPEC Fund for International Development, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.