Gottlieb, MS; Schanker, HM; Fan, PT; Saxon, A; Weisman, JD; Pozalski, I (5 June 1981). "Pneumocystis Pneumonia — Los Angeles". Morbidity and Mortality Weekly Report. 30 (21). U.S. Centers for Disease Control and Prevention: 250–251. Retrieved 17 January 2023.