The author, Reinhard Janning, a sales and marketing expert who a wealth of experience under his belt as a manager and entrepreneur, describes not just a transparent process for suc...lihat lebih banyakThe author, Reinhard Janning, a sales and marketing expert who a wealth of experience under his belt as a manager and entrepreneur, describes not just a transparent process for successful lead management, but also the relevant methods and tools.lihat lebih sedikit