Wilbers, S. (2000). Keys to great writing. Writer's Digest Books.
芝加哥风格引文Wilbers, Stephen. Keys to Great Writing. Cincinnati, Ohio: Writer's Digest Books, 2000.
MLA引文Wilbers, Stephen. Keys to Great Writing. Writer's Digest Books, 2000.
警告：这些引文格式不一定是100％准确.