APA-čujuhus (7. p.)
Turvey, S. (2008). Witness to extinction: How we failed to save the Yangtze River dolphin. Oxford University Press.
Chicago-čujuhus (17. p.)
Turvey, Sam. Witness to Extinction: How We Failed to Save the Yangtze River Dolphin. Oxford ; New York: Oxford University Press, 2008.
MLA-čujuhus (9. p.)
Turvey, Sam. Witness to Extinction: How We Failed to Save the Yangtze River Dolphin. Oxford University Press, 2008.
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