Life in Ancient Greece.Oxford University Press,USA.ISBN 9780195124910. FranzCumont, The Oriental Religions in Roman Paganism, Dover Publications, 1956.
Archaeology 7, 1994, p.461. cf. Beck, "Mithraism since FranzCumont", ANRW II.17.4, 1984, p.2018-2019 Cumont, Franz (1903). The Mysteries of Mithras. p. 173. Retrieved