ebrary, Inc, & Bergman, M. (2008). Iowa history reader (University of Iowa Press ed.). University of Iowa Press.
芝加哥风格引文ebrary, Inc, 与 Marvin Bergman. Iowa History Reader. University of Iowa Press ed. Iowa City: University of Iowa Press, 2008.
MLA引文ebrary, Inc, 与 Marvin Bergman. Iowa History Reader. University of Iowa Press ed. University of Iowa Press, 2008.
警告：这些引文格式不一定是100％准确.