Abbreviated references to classical authors follow the Oxford Classical Dictionary, third ed. (1996), with the exception that the Scriptores Historiae Augustae is abbreviated HA.
Abbreviations of journals and series follow L’Année Philologique (1996).
Abbreviations of papyrological volumes follow the Checklist of Editions of Greek and Latin Papyri, Ostraca and Tablets (Fourth Edition, ed. J. F. Oates, R. S. Bagnall, W. H. Willis, and K. A. Worp) (BASP Suppl. 7) (1992).
CIL = Corpus Inscriptionum Latinarum
ILS = Inscriptiones Latinae Selectae
AE = L’Année Épigraphique
D. = Digest
C. = Codex Iustinianus
Gaius = Gaius, Institutes
RMD = M. M. Roxan, ed. Roman Military Diplomas I–III
RMR = R. Fink, ed. Roman Military Records on Papyrus (1971)