Paul, W. H. (2007). Future energy: How the new oil industry will change people, politics and portfolios. John Wiley & Sons.
استشهاد بنمط شيكاغوPaul, William Henry. Future Energy: How the New Oil Industry Will Change People, Politics and Portfolios. John Wiley & Sons, 2007.
MLA استشهادPaul, William Henry. Future Energy: How the New Oil Industry Will Change People, Politics and Portfolios. John Wiley & Sons, 2007.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.