ebrary, Inc, & Álvarez, J. T. (2011). Social security: Background, issues and proposals. Nova Science Publishers.
芝加哥风格引文ebrary, Inc, 与 Jacob T. Álvarez. Social Security: Background, Issues and Proposals. New York: Nova Science Publishers, 2011.
MLA引文ebrary, Inc, 与 Jacob T. Álvarez. Social Security: Background, Issues and Proposals. Nova Science Publishers, 2011.
警告：这些引文格式不一定是100％准确.