Walton, W. R. (1920). European corn borer in american corn. U.S. Department of Agriculture.
芝加哥风格引文Walton, William Randolph. European Corn Borer in American Corn. Washington: U.S. Department of Agriculture, 1920.
MLA引文Walton, William Randolph. European Corn Borer in American Corn. U.S. Department of Agriculture, 1920.
警告：这些引文格式不一定是100％准确.