Butterfield, J. (2018). Soft Skills for Everyone. Cengage Learning.
芝加哥风格引文Butterfield, Jeff. Soft Skills for Everyone. Delhi: Cengage Learning, 2018.
MLA引文Butterfield, Jeff. Soft Skills for Everyone. Cengage Learning, 2018.
警告：这些引文格式不一定是100％准确.
APA引文