Cita APA (7a ed.)

Evans, D. L., & Cooper, K. B. B. An Aging World: 2001 /U.S. Department of Commerce. Economics and Statistics Asministration. Government Printing Office.

Cita Chicago Style (17a ed.)

Evans, Donald L., 与 Kathleen B Barron Cooper. An Aging World: 2001 /U.S. Department of Commerce. Economics and Statistics Asministration. Washington, D.C: Government Printing Office.

Cita MLA (9a ed.)

Evans, Donald L., 与 Kathleen B Barron Cooper. An Aging World: 2001 /U.S. Department of Commerce. Economics and Statistics Asministration. Government Printing Office.