World Health Organization. (2004). Health of the elderly in south- east asia: A profile. Worlld Health Organization.
芝加哥风格引文World Health Organization. Health of the Elderly in South- East Asia: A Profile. New Delhi: Worlld Health Organization, 2004.
MLA引文World Health Organization. Health of the Elderly in South- East Asia: A Profile. Worlld Health Organization, 2004.
警告：这些引文格式不一定是100％准确.