Macrobius, Saturnalia, Book II, 5:2, translations from Macrobius: Saturnalia, Volume I: Books 1–2. Edited and translated by Robert A. Kaster. Loeb Classical Library 510. Cambridge, MA: Harvard University Press, 2011. pp. 361-2. [1]
(Inter amicos [Augustus] dixit duas habere se filias delicatas, quas necesse haberet ferre, rem publicam et Iuliam.) Macrobius, Saturnalia, Book 2, Ch. 5.4