1. Project Management Institute. (2017). A Guide to the Project Management Body of Knowledge (PMBOK® Guide) (6th ed.). Section 9.4.3.5, Page 354. The guide explicitly lists "Enterprise Environmental Factors Updates" as an output of the Develop Team process, noting that "The enterprise environmental factors that may be updated as a result of the Develop Team process include...personnel administration...".
2. Carnegie Mellon University, Software Engineering Institute. (2010). The Project Manager's Guide to Achieving CMMI. Page 118. This academic text, referencing PMI standards, discusses how team development activities (like training) result in updated records, which aligns with the concept of updating EEFs like personnel administration files.