Tuhovsky,IAN. (2020). Effective Communication Skills Mastery Bible: 4 Books in 1 (NA.). Amazon.
芝加哥风格引文Tuhovsky,IAN. Effective Communication Skills Mastery Bible: 4 Books in 1. NA. Amazon, 2020.
MLA引文Tuhovsky,IAN. Effective Communication Skills Mastery Bible: 4 Books in 1. NA. Amazon, 2020.
警告：这些引文格式不一定是100％准确.