Santos, Charlise do Carmo Alves dos, Julia Castilho, Rodolfo Figueiredo de Sousa, Otoniel Ferreira. "Penfigo Adventist Hospital." Encyclopedia of Seventh-day Adventists. December 31, 1969. Date of access September 21, 2020, https://encyclopedia.adventist.org/article?id=FGJ4.