RT Journal Article SR Electronic T1 What Do We Know about Word of Mouth? JF Journal of Advertising Research JO J Advert Res FD WARC SP 119 OP 120 DO 10.2501/JAR-2017-018 VO 57 IS 2 A1 Precourt, Geoffrey YR 2017 UL http://www.journalofadvertisingresearch.com/content/57/2/119.abstract AB