http://digfir-published.macmillanusa.com/video_public_speaking_accessible/video_public_speaking_accessible_ch31.html
Chapter
31. Citing sources (credibility) (NEEDS IMPROVEMENT)
59d7824a7894d2d37a000008
http://digfir-published.macmillanusa.com/video_public_speaking_accessible/video_public_speaking_accessible_ch31_dlap.xmlDLAP questions59d7824a7894d2d37a000008