Sherfield Robert M. Cornerstone Developing Soft Skills (4th.). Pearson.
芝加哥风格引文Sherfield Robert M. Cornerstone Developing Soft Skills. 4th. Delhi Delhi: Pearson.
MLA引文Sherfield Robert M. Cornerstone Developing Soft Skills. 4th. Pearson.
警告：这些引文格式不一定是100％准确.