Doughty, T., & Portillo, J. (2021). Little pieces of hope: Happy-making things in a difficult world. Penguin Life.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDoughty, Todd, और Josie Portillo. Little Pieces of Hope: Happy-making Things in a Difficult World. [New York, New York]: Penguin Life, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रDoughty, Todd, और Josie Portillo. Little Pieces of Hope: Happy-making Things in a Difficult World. Penguin Life, 2021.
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