Humphries, John, (1938-)

Managing your sales team = a practical guide to leadership that will get the best results / by: Humphries, John, (1938-); NetLibrary, Inc. (書目-電子資源)

Managing through people = how to get the best from your most valuable resource / by: Humphries, John, (1938-); NetLibrary, Inc. (書目-電子資源)