Fontaine, M., ed. Sulpice Sévère, Vie de Saint Martin, 3 vols. Paris: Les Belles Lettres, 1967. Latin text, French translation, and extensive commentary.
Gœlzer, Henrichus. Grammaticae in Sulpicium Severum Observationes, potissimum ad vulgarem Latinum sermonem pertinentes. Paris: Hachette, 1883. At archive.org.
Halm, C. ed. Sulpicii Severi Opera. Vienna: Royal Academy of Letters, 1866. Corpus Scriptorum Ecclesiasticorum Latinorum vol. 1. Complete works, in a generally reliable text. At Google Books.
Jones, A.H.M. The Later Roman Empire, 284-602: A Social, Economic, and Administrative Survey. Oxford: Blackwell, 1964. Classic work on the political and administrative workings of the Roman Empire at this time.
Lönnergen, Aug. De Syntaxi Sulpicii Severi. Upsala: Edquist, 1882. At Google Books.
MacMullen, Ramsay. The Second Church: Popular Christianity A.D. 200-400. Atlanta: Society for Biblical Literature, 2009. Relevant to the popular religious practices referred to in ch. 11.
Pernoud, Régine. Martin of Tours: Soldier, Bishop, and Saint. Trans. Michael J. Miller. San Francisco: Ignatius Press, 2006. Biography in a popular style, by a noted French historian. No footnotes.
Pietri, Luce. La Ville de Tours du IVe au VIe siècle: naissance d'une cité chrétienne. Rome: Ecole Francaise de Rome, 1983.
Stancliffe, Clare. Saint Martin and his Biographer. Oxford: Oxford University Press, 1983. Important monograph on all aspects of Sulpicius and Martin.
White, Carolinne. Early Christian Lives. London: Penguin, 1998. Includes an excellent English translation of Sulpicius' Life of St. Martin.