Gardner, D., & Overcott, N. (2006). Fifty common birds of the upper Midwest. University of Iowa Press.
芝加哥风格引文Gardner, Dana, 与 Nancy Overcott. Fifty Common Birds of the Upper Midwest. Iowa City: University of Iowa Press, 2006.
MLA引文Gardner, Dana, 与 Nancy Overcott. Fifty Common Birds of the Upper Midwest. University of Iowa Press, 2006.
警告：这些引文格式不一定是100％准确.