Black, G. (1992). Iowa birdlife. Published for the Nature Conservancy by the University of Iowa Press.
芝加哥风格引文Black, Gladys. Iowa Birdlife. Iowa City: Published for the Nature Conservancy by the University of Iowa Press, 1992.
MLA引文Black, Gladys. Iowa Birdlife. Published for the Nature Conservancy by the University of Iowa Press, 1992.
警告：这些引文格式不一定是100％准确.