Stewart, A., & Henderson, H. (2012). The earth moved: On the remarkable achievements of earthworms (Unabridged.). HighBridge Audio.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStewart, Amy, और Heather Henderson. The Earth Moved: On the Remarkable Achievements of Earthworms. Unabridged. Prince Frederick: HighBridge Audio, 2012.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStewart, Amy, और Heather Henderson. The Earth Moved: On the Remarkable Achievements of Earthworms. Unabridged. HighBridge Audio, 2012.
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