1. Appian. (1899). Roman History - The Foreign Wars.The MacMillan Co. (Translated from Ancient Greek into English by White H.).
2. Art, R. J. (2003). A Grand Strategy for America. Cornell University Press.
3. Barlow, J. B. (1992). Strategic Paralysis - An Airpower Theory for The Present. The School of Advanced Airpower Studies, Air University.
4. Bloomberg (2022, June 27). WTI Crude Oil (Nymex) Index.https://www.bloomberg.com/quote/CL1:COM
5. Bownes, A. B. (2008). Targeting Civilians in War. Cornell University Press.