I have often worked on teams, and been responsible for editing and proofreading the work of other professional marketers and writers.
When I worked at SR Books, we managed the entire book publishing process from start to finish. This included soliciting reviews from respected professors and other experts which ultimately appeared on the back cover of our books.
It was always a thrill to get a quote from an elusive expert.
I have included links to a few of the books I promoted by obtaining and editing quotes for inclusion on back covers.