Holland, J. S. (2011). Unlikely friendships: 47 remarkable stories from the animal kingdom. Workman Pub..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHolland, Jennifer S. Unlikely Friendships: 47 Remarkable Stories from the Animal Kingdom. New York: Workman Pub., 2011.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHolland, Jennifer S. Unlikely Friendships: 47 Remarkable Stories from the Animal Kingdom. Workman Pub., 2011.
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