RT Journal Article SR Electronic T1 How Does Earned Media Work in Advertising? JF Journal of Advertising Research JO J Advert Res FD WARC SP 370 OP 371 DO 10.2501/JAR-54-4-370-371 VO 54 IS 4 A1 Precourt, Geoffrey YR 2014 UL http://www.journalofadvertisingresearch.com/content/54/4/370.abstract AB