McClees, Helen and Christine Alexander. 1933. The Daily Life of the Greeks and Romans: As Illustrated in the Classical Collections, 5th edn. p. 26, New York: The Metropolitan Museum of Art.
Richter, Gisela M. A. and Christine Alexander. 1939. Augustan Art: An Exhibition Commemorating the Bimillennium of the Birth of Augustus. p. 24, New York: Marchbanks Press.