APA Style

Jackson, R. et al (2008). The Graying of the Great Powers : Demography and Geopolitics in the 21st Century. . Washington, D.C.: CSIS.

MLA Style

Jackson, Richard. et al. "The Graying of the Great Powers : Demography and Geopolitics in the 21st Century.". Washington, D.C.: CSIS, 2008. หนังสือ (Book).