↑Michele Renee Salzman, On Roman time: the codex-calendar of 354 and the rhythms of urban life in late antiquity University of California Press, 1990, ISBN0-520-06566-2, p. 229.
↑So maintains Rita Lizzi Testa in Senatori, popolo, papi: il governo di Roma al tempo dei Valentiniani, Edipuglia, 2004, ISBN88-7228-392-2, pp. 117-118.
Daftar pustaka
John Bagnell Bury; et al., The Cambridge Ancient History - Volume XIII The Late Empire 337-425, Cambridge University Press, 1925. p. 21 ISBN0-521-30200-5