Kelsey, E. (2020). Hope matters: Why changing the way we think is critical to solving the environmental crisis. Greystone Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKelsey, Elin. Hope Matters: Why Changing the Way We Think Is Critical to Solving the Environmental Crisis. Vancouver ; Berkeley: Greystone Books, 2020.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKelsey, Elin. Hope Matters: Why Changing the Way We Think Is Critical to Solving the Environmental Crisis. Greystone Books, 2020.
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