Helberg, B., & Berge, T. (2016). Sniffer & Tinni: A true tale of amazing animal friendship (First Sterling edition.). Sterling Children's Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHelberg, Berit, और Torgeir Berge. Sniffer & Tinni: A True Tale of Amazing Animal Friendship. First Sterling edition. New York: Sterling Children's Books, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHelberg, Berit, और Torgeir Berge. Sniffer & Tinni: A True Tale of Amazing Animal Friendship. First Sterling edition. Sterling Children's Books, 2016.
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