Hoopmann, K. (2017). All birds have anxiety. Jessica Kingsley Publishers.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHoopmann, Kathy. All Birds Have Anxiety. London, UK ; Philadelphia, PA, USA: Jessica Kingsley Publishers, 2017.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHoopmann, Kathy. All Birds Have Anxiety. Jessica Kingsley Publishers, 2017.
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