有效传播的步骤 14-5 Step 4. Choosing Media Personal communication Channels Nonpersonal communication Channels Step 5. Selecting the Message Source Step 6. Collecting Feedback 商务策划学院2002商务策划学院 2002 14-5 Nonpersonal Communication Channels 有效传播的步骤 Step 4. Choosing Media Personal Communication Channels Step 5. Selecting the Message Source Step 6. Collecting Feedback