Svoboda, E. (2013). What makes a hero?: The surprising science of selflessness. Current.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSvoboda, Elizabeth. What Makes a Hero?: The Surprising Science of Selflessness. New York: Current, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSvoboda, Elizabeth. What Makes a Hero?: The Surprising Science of Selflessness. Current, 2013.
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