1. Project Management Institute. (2017). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) (6th ed.). Project Management Institute. Section 10.2
Page 375. The text explicitly states
"The key benefit of this process is that it enables an efficient and effective communication flow between project stakeholders."
2. Project Management Institute. (2021). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) (7th ed.). Project Management Institute. Section 2.4
Project Work Performance Domain
Page 73. This section emphasizes that managing project communications and engagement leads to "shared understanding" through "effective and efficient" communication processes.
3. Vliet
H. van. (2010). Software Engineering: Principles and Practice (3rd ed.). Wiley. While a software engineering text
it aligns with PMI principles in its project management sections
noting that the execution of a communication plan is to facilitate an "effective flow of information" to prevent project failures. (Referenced in various university software project management courses).