Merriam, W. (1996). Merriam - Webster`s guide to business correspondence. Merriam -Webster.
芝加哥风格引文Merriam, Webster. Merriam - Webster`s Guide to Business Correspondence. Springfiel d: Merriam -Webster, 1996.
MLA引文Merriam, Webster. Merriam - Webster`s Guide to Business Correspondence. Merriam -Webster, 1996.
警告：这些引文格式不一定是100％准确.