Fagan, J., Wigal, D., Cicero, M. T., & Deibel, F. (2009). The Cicero Project: A celebration of old age by common bonders : reflections on Cicero's "On a Life well spent" (De senectute) (First edition.). Argüeso Garzón Editores.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFagan, Joseph, Donald Wigal, Marcus Tullius Cicero, और Frank Deibel. The Cicero Project: A Celebration of Old Age by Common Bonders : Reflections on Cicero's "On a Life Well Spent" (De Senectute). First edition. Bogatá: Argüeso Garzón Editores, 2009.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFagan, Joseph, et al. The Cicero Project: A Celebration of Old Age by Common Bonders : Reflections on Cicero's "On a Life Well Spent" (De Senectute). First edition. Argüeso Garzón Editores, 2009.
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