Bekoff, M. (2007). The emotional lives of animals: A leading scientist explores animal joy, sorrow, and empathy--and why they matter. New World Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBekoff, Marc. The Emotional Lives of Animals: A Leading Scientist Explores Animal Joy, Sorrow, and Empathy--and Why They Matter. Novato, Calif.: New World Library, 2007.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBekoff, Marc. The Emotional Lives of Animals: A Leading Scientist Explores Animal Joy, Sorrow, and Empathy--and Why They Matter. New World Library, 2007.
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