Hobhouse, H., & Runger, N. (1987). Seeds of change: Five plants that transformed mankind (Unabridged.). Recorded Books Inc..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHobhouse, Henry, और Nelson Runger. Seeds of Change: Five Plants That Transformed Mankind. Unabridged. Prince Frederick: Recorded Books Inc., 1987.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHobhouse, Henry, और Nelson Runger. Seeds of Change: Five Plants That Transformed Mankind. Unabridged. Recorded Books Inc., 1987.
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