APA-ийн эшлэл(7 дахь хэвлэлт)

Turvey, S. (2008). Witness to extinction: How we failed to save the Yangtze River dolphin. Oxford University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Turvey, Sam. Witness to Extinction: How We Failed to Save the Yangtze River Dolphin. Oxford ; New York: Oxford University Press, 2008.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Turvey, Sam. Witness to Extinction: How We Failed to Save the Yangtze River Dolphin. Oxford University Press, 2008.