http://digfir-published.macmillanusa.com/video_human_comm/video_human_comm_ch182_1.htmlPatterns of arrangement: Causal (single cause for multiple effects)52e1a8f2757a2e0305000000
http://digfir-published.macmillanusa.com/video_human_comm/video_human_comm_ch182_1_dlap.xmlDLAP questions52e1a8f2757a2e0305000000