vgl. Karte in: Bernard B. Fall: The Political-Religious Sects of Viet-Nam. In: Pacific Affairs. Bd. 28, Nr. 3, 1955, S. 235–253, hier S. 236, doi:10.2307/3035404.
Brian Crozier: The Diem Regime in South Vietnam. In: Far Eastern Survey. Bd. 24, Nr. 4, April 1955, S. 49–56, hier S. 55, doi:10.2307/3023970.