The Cambridge Ancient History . Volume 12 , The Imperial crisis and recovery, A.D. 193-324 - Cook, S. A. 1873-1949; Baynes, Norman Hepburn 1877-1961; Charlesworth, M. P. 1895-1950; Adcock, F. E. 1886-1968 (Cambridge At The University Press, 1939)
Keywords: Roma -- -Historia