Probably the two most important works on the topic in 30 years: https://www.amazon.ca/Power-Some-People-Have-Others/dp/0061789089 https://www.amazon.ca/Power-S

Probably the two most important works on the topic in 30 years: https://www.amazon.ca/Power-Some-People-Have-Others/dp/0061789089 https://www.amazon.ca/Power-Some-People-Have-Others/dp/00617... https://www.amazon.ca/Getting-Yes-Negotiating-Agreement-Without/dp/0143118757/ref=sr_1_1?s=books&ie=UTF8&qid=1542736851&sr=1-1&keywords=getting+to+yes https://www.amazon.ca/Getting-Yes-Negotiating-Agreement-With...