APA (7th ed.) Citation

Hedges, S. B., & Kumar, S. (2009). The timetree of life. Oxford University Press.

Chicago Style (17th ed.) Citation

Hedges, S. Blair, and Sudhir Kumar. The Timetree of Life. Oxford ; New York: Oxford University Press, 2009.

MLA (9th ed.) Citation

Hedges, S. Blair, and Sudhir Kumar. The Timetree of Life. Oxford University Press, 2009.