"The Second Reign, that is, the period in which our Emperor was D. Pedro II, lasted fifty-eight years, from the abdication of his father, D. Pedro I, in 1831, until the proclamation of the republic in 1889." —Hélio Viana in Viana 1994, стр. 467 Viana, Hélio (1994). História do Brasil: período colonial, monarquia e república (на језику: Portuguese) (15th изд.). São Paulo: Melhoramentos. ISBN978-85-06-01999-3.CS1 одржавање: Непрепознат језик (веза)