PEMEX – Hydrocarbon Potential – 2012 Pemex – Hydrocarbon potential (size of discoveries) – 2012 (Inglés, 2012, PDF) by
EIA – World Energy Outlook 2013 – Executive Summary EIA – World Energy Outlook 2013 (inglés, 2013, PDF) by
CITI, ENERGY 2020: North America, the New Middle East? CITI Report – Energy 2020 (Inglés, 2012, PDF) by