Kalb, C. (2021). Spark: How genius ignites, from child prodigies to late bloomers. National Geographic Partners, LLC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रKalb, Claudia. Spark: How Genius Ignites, from Child Prodigies to Late Bloomers. Washington, D.C.: National Geographic Partners, LLC, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रKalb, Claudia. Spark: How Genius Ignites, from Child Prodigies to Late Bloomers. National Geographic Partners, LLC, 2021.
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