Epictetus & Grindell, S. (2018). How to be free: An ancient guide to the stoic life (Unabridged.). HighBridge Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEpictetus और Shaun Grindell. How to Be Free: An Ancient Guide to the Stoic Life. Unabridged. Prince Frederick: HighBridge Audio, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रEpictetus और Shaun Grindell. How to Be Free: An Ancient Guide to the Stoic Life. Unabridged. HighBridge Audio, 2018.
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