Schmahl, W. (1989). Redefining the process of retirement: An international perspective. Springer-Verlag.
芝加哥风格引文Schmahl, Winfried. Redefining the Process of Retirement: An International Perspective. Berlin: Springer-Verlag, 1989.
MLA引文Schmahl, Winfried. Redefining the Process of Retirement: An International Perspective. Springer-Verlag, 1989.
警告：这些引文格式不一定是100％准确.