Chang, G., & Sederberg, T. W. (1997). Over and over again. Mathematical Association of America.
芝加哥风格引文Chang, Gengzhe, 与 Thomas W. Sederberg. Over and over Again. Washington, DC: Mathematical Association of America, 1997.
MLA引文Chang, Gengzhe, 与 Thomas W. Sederberg. Over and over Again. Mathematical Association of America, 1997.
警告：这些引文格式不一定是100％准确.