%0 Journal Article %A John B. Ford %T What Do We Know About Social-Media Marketing? %D 2019 %R 10.2501/JAR-2019-041 %J Journal of Advertising Research %P 383-384 %V 59 %N 4 %U https://www.journalofadvertisingresearch.com/content/jadvertres/59/4/383.full.pdf