Feynman, R. P., & Feynman, M. (2005). Perfectly reasonable deviations from the beaten track: The letters of Richard P. Feynman. Basic Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFeynman, Richard P., और Michelle Feynman. Perfectly Reasonable Deviations from the Beaten Track: The Letters of Richard P. Feynman. New York: Basic Books, 2005.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFeynman, Richard P., और Michelle Feynman. Perfectly Reasonable Deviations from the Beaten Track: The Letters of Richard P. Feynman. Basic Books, 2005.
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