References

Website 

• http://smallbusiness.chron.com/techniques-improving-nonverbal-communication-skills-workplace-21411.html
• http://smallbusiness.chron.com/importance-nonverbals-workplace-23803.html
• https://www.skillsyouneed.com/ips/nonverbal-communication.html
• https://www.thebalance.com/nonverbal-communication-skills-2059693
• https://en.wikipedia.org/wiki/Nonverbal_communication
• http://examples.yourdictionary.com/examples-of-non-verbal-communication.html​​​​​​​
• https://www.thoughtco.com/what-is-nonverbal-communication-1691351
• https://www.verywell.com/types-of-nonverbal-communication-2795397
• https://thebusinesscommunication.com/advantages-and-disadvantages-of-non-verbal-communication/
• https://www.skillsyouneed.com/ips/body-language.html
• https://www.helpguide.org/articles/relationships-communication/nonverbal-communication.htm​​​​​​​

Book

• Fundamentals of communication