Juliann Sivulka,Stronger than Dirt: A Cultural History of Advertising: Personal Hygiene in America, 1875–1940, New York: Humanity Books, 2001
本书探讨1875至1940年间美国个人卫生观念的剧变，从极少用肥皂洗澡到痴迷泡沫和豪华浴室，揭示广告在其中的作用。
Abstract In Stronger Than Dirt, Juliann Sivulka explores how concepts of personal hygiene underwent a dramatic change in the United States between 1875 and 1940 and how, during this relatively short period, Americans changed from a group of reluctant bathers—who rarely if ever used soap for personal hygiene—to a nation in love with suds and lavishly outfitted bathrooms.