APA (7th ed.) Citation

Bureau, U. C., Kinsella, K., & He, W. (2009). An aging world: 2008. Washington, DC.

Chicago Style (17th ed.) Citation

Bureau, U.S. Census, Kevin Kinsella, and Wan He. An Aging World: 2008. Washington, DC, 2009.

MLA (8th ed.) Citation

Bureau, U.S. Census, et al. An Aging World: 2008. Washington, DC, 2009.