ebrary, Inc. (2001). Preparing for an aging world: The case for cross-national research. National Academy Press.
芝加哥风格引文ebrary, Inc. Preparing for an Aging World: The Case for Cross-national Research. Washington, D.C.: National Academy Press, 2001.
MLA引文ebrary, Inc. Preparing for an Aging World: The Case for Cross-national Research. National Academy Press, 2001.
警告：这些引文格式不一定是100％准确.