Schwieder, D. (1996). Iowa: The middle land. University of Iowa Press.
芝加哥风格引文Schwieder, Dorothy. Iowa: The Middle Land. Iowa City: University of Iowa Press, 1996.
MLA引文Schwieder, Dorothy. Iowa: The Middle Land. University of Iowa Press, 1996.
警告：这些引文格式不一定是100％准确.