Wallmark, L., & Smart, B. (2021). Code breaker, spy hunter: How Elizebeth Friedman changed the course of two world wars. Abrams Books for Young Readers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWallmark, Laurie, और Brooke Smart. Code Breaker, Spy Hunter: How Elizebeth Friedman Changed the Course of Two World Wars. New York: Abrams Books for Young Readers, 2021.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWallmark, Laurie, और Brooke Smart. Code Breaker, Spy Hunter: How Elizebeth Friedman Changed the Course of Two World Wars. Abrams Books for Young Readers, 2021.
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