Khan, J., Chang, Y., & Studies, S. R. S. o. I. (2009). Gas feuds: Russia and the EU's energy security.
استشهاد بنمط شيكاغوKhan, Jesmeen, Youngho Chang, و S. Rajaratnam School of International Studies. Gas Feuds: Russia and the EU's Energy Security. 2009.
MLA استشهادKhan, Jesmeen, Youngho Chang, و S. Rajaratnam School of International Studies. Gas Feuds: Russia and the EU's Energy Security. 2009.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.