Lenski, N. E. (2002). Failure of empire: Valens and the Roman state in the fourth century A.D. University of California Press.
Chicago Style (17th ed.) ZitazioaLenski, Noel Emmanuel. Failure of Empire: Valens and the Roman State in the Fourth Century A.D. Berkeley: University of California Press, 2002.
MLA (9th ed.) ZitazioaLenski, Noel Emmanuel. Failure of Empire: Valens and the Roman State in the Fourth Century A.D. University of California Press, 2002.
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