Elkins, A. J., & Elkins, C. (2004). Where have all the birdies gone? (1st world ed.). Severn House.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रElkins, Aaron J., और Charlotte Elkins. Where Have All the Birdies Gone? 1st world ed. Sutton, Surrey [England] ; New York, NY: Severn House, 2004.
एमएलए (8वां संस्करण) प्रशस्ति पत्रElkins, Aaron J., और Charlotte Elkins. Where Have All the Birdies Gone? 1st world ed. Severn House, 2004.
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