APA引文

USAID. (2001). Essential health sector actions to improve maternal nutrition in Africa. The Linkages project.

芝加哥风格引文

USAID. Essential Health Sector Actions to Improve Maternal Nutrition in Africa. Washington, DC: The Linkages project, 2001.

MLA引文

USAID. Essential Health Sector Actions to Improve Maternal Nutrition in Africa. The Linkages project, 2001.

警告：这些引文格式不一定是100％准确.