Houston, S., & Roberts, M. T. (1999). 1848-1852. University of North Texas Press.
芝加哥风格引文Houston, Sam, 与 Madge Thornall Roberts. 1848-1852. Denton, TX: University of North Texas Press, 1999.
MLA引文Houston, Sam, 与 Madge Thornall Roberts. 1848-1852. University of North Texas Press, 1999.
警告：这些引文格式不一定是100％准确.