Macaulay, D., & Keenan, S. (2013). Toilet: How it works (First edition.). David Macaulay Studio, Macmillan Children's Publishing Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रMacaulay, David, और Sheila Keenan. Toilet: How It Works. First edition. New York: David Macaulay Studio, Macmillan Children's Publishing Group, 2013.
एमएलए (8वां संस्करण) प्रशस्ति पत्रMacaulay, David, और Sheila Keenan. Toilet: How It Works. First edition. David Macaulay Studio, Macmillan Children's Publishing Group, 2013.
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