"National Statistics Office of Cuba" (in Spanish).
ONE - Oficina Nacional de Estadisticas de Cuba.
Archived from the original on 30 November 2011.
Retrieved 27 November 2011.

"Plaza Vieja History" (in Spanish).
habanaenlinea.cu.
Retrieved 27 November 2011.
"National Statistics Office of Cuba" (in Spanish). ONE - Oficina Nacional de Estadisticas de Cuba. Archived from the original on 30 November 2011. Retrieved 27 November 2011.
"Plaza Vieja History" (in Spanish). habanaenlinea.cu. Retrieved 27 November 2011.
Plaza Vieja, Havana