White, Donald J., Ann B. Brownlee, Irene B. Romano, and Jean M. Turfa. Guide to the Etruscan and Roman Worlds at the University of Pennsylvania Museum of Archaeology and Anthropology. Philadelphia: University of Pennsylvania Museum of Archaeology and Anthropology, 2002. See: p. 75, no. 108
Fleming, Stuart J. Roman Glass (II): Reflections on Cultural Change. University of Pennsylvania Museum of Archaeology and Anthropology, 1999. See: p. 34, fig. E.16B(a)