Bert Holtje is the editor emeritus of Agency Sales Magazine. In addition to owning a successful advertising agency, Bert is the author of over 20 books, many of them on subjects of interest to manufacturers’ agents.
Bert Holtje is the editor emeritus of Agency Sales Magazine. In addition to owning a successful advertising agency, Bert is the author of over 20 books, many of them on subjects of interest to manufacturers’ agents.