“Knowledge, Attitude and Practice of Hand Washing Among Street Vendors in Campus of Universitas Padjadjaran, West Java from June-November 2012”. Althea Medical Journal 2, no. 3 (September 26, 2015): 369–374. Accessed August 3, 2026. https://journal.fk.unpad.ac.id/index.php/amj/article/view/500.