Hannibal, M. E. (2016). Citizen scientist: Searching for heroes and hope in an age of extinction. The Experiment.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHannibal, Mary Ellen. Citizen Scientist: Searching for Heroes and Hope in an Age of Extinction. New York: The Experiment, 2016.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHannibal, Mary Ellen. Citizen Scientist: Searching for Heroes and Hope in an Age of Extinction. The Experiment, 2016.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.