Gibson, W. M. (1967). William D. Howells. University of Minnesota Press.
芝加哥风格引文Gibson, William Merriam. William D. Howells. Minneapolis: University of Minnesota Press, 1967.
MLA引文Gibson, William Merriam. William D. Howells. University of Minnesota Press, 1967.
警告：这些引文格式不一定是100％准确.