APA
Levine D. K., National Bureau of Economic Research & Modica S. (2013). Conflict, evolution, hegemony and the power of the state. Cambridge: NBER.
Chicago
Levine David K, National Bureau of Economic Research and Modica Salvatore. 2013. Conflict, evolution, hegemony and the power of the state. Cambridge: NBER.
Harvard
Levine D. K., National Bureau of Economic Research and Modica S. (2013). Conflict, evolution, hegemony and the power of the state. Cambridge: NBER.
MLA
Levine David K, National Bureau of Economic Research and Modica Salvatore. Conflict, evolution, hegemony and the power of the state. Cambridge: NBER. 2013.