According at the DMPF (Departamento de control de la Dirección Municipal de Planificación Física or Management Control Department Municipal Physical Planning in English) of Camajuani, El Purial is a settlement not linked to any source of an economic or job development but still are maintained.[3]
^Pardo, Georges (2009). The geology of Cuba. Tulsa, Okla: American Association of Petroleum Geologists. p. 23. ISBN978-0-89181-065-0.
^Office of Geography, United States (1963). Cuba : Official Standard Names Approved by the U.S. Board on Geographic Names. Washington: U.S. Govt. Print. Off. p. 460.
^Franqui, Carlos; Felix, Georgette; Kerrigan, Elaine; Freeman, Phyllis; St. Martin, Hardie; Franqui, Carlos (1980). Diary of the Cuban revolution. New York: The Viking Press. p. 34. ISBN978-0-670-27217-4.