Farrar. Field Guide to Wildflowers of Nebraska and the Great Plains. University of Iowa Press.
芝加哥风格引文Farrar. Field Guide to Wildflowers of Nebraska and the Great Plains. University of Iowa Press.
MLA引文Farrar. Field Guide to Wildflowers of Nebraska and the Great Plains. University of Iowa Press.
警告：这些引文格式不一定是100％准确.