Tzuo, T. (2018). Subscribed: Why the subscription model will be your company's future - and what to do about it. Portfolio/Penguin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTzuo, Tien. Subscribed: Why the Subscription Model Will Be Your Company's Future - and What to Do About It. New York, New York: Portfolio/Penguin, 2018.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTzuo, Tien. Subscribed: Why the Subscription Model Will Be Your Company's Future - and What to Do About It. Portfolio/Penguin, 2018.
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