Chronicle of Edessa, ed. I. Guidi et al., CSCO 1, Louvain, 1955.
Chronicon Paschale, ed. L. Dindorf, Bonn, 1832.
H. J. W. Drijvers, “Hatra, Palmyra und Edessa,” ANRW II/8, 1978, pp. 799-906.
E. Honigmann [C. E. Bosworth], “al-Ruhā,” in EI2 VIII, pp. 589-91.
Ioannis Malalas, Ioannis MalalaeChronographia, ed. L. Dindorf, Bonn, 1831.
E. Meyer, “Edessa,” in Pauly-Wissowa V/2, cols. 1933-38.
Michael the Syrian, Chronique de Michel le Syrien, ed. J. B. Chabot, 3 vols., Paris 1899-1904.
J. B. Segal, Edessa the Blessed City, Oxford, 1970.
J. Wagner, “Provincia Osrhoenae. New Archaeological Finds Illustrating the Military Organization under the Severan Dynasty,” in S. Mitchell, ed., Armies and Frontiers in Roman and Byzantine Anatolia, BAR 156, Oxford, 1983, pp. 103-30.