Achenbaum, W. A. (2019). Old Age in the New Land: The American Experience since 1790. Johns Hopkins University Press.
芝加哥风格引文Achenbaum, W. Andrew. Old Age in the New Land: The American Experience Since 1790. Baltimore: Johns Hopkins University Press, 2019.
MLA引文Achenbaum, W. Andrew. Old Age in the New Land: The American Experience Since 1790. Johns Hopkins University Press, 2019.
警告：这些引文格式不一定是100％准确.