Sykes, B., & Curless, J. (2019). Once a wolf: The science behind our dogs' astonishing genetic evolution (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSykes, Bryan, और John Curless. Once a Wolf: The Science Behind Our Dogs' Astonishing Genetic Evolution. Unabridged. Prince Frederick: Recorded Books Inc., 2019.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSykes, Bryan, और John Curless. Once a Wolf: The Science Behind Our Dogs' Astonishing Genetic Evolution. Unabridged. Recorded Books Inc., 2019.
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