Reilly, Bernard F. (1993) (英語). The Medieval Spains. Cambridge University Press. p. 139. ISBN9780521397414. https://books.google.com/books?id=NdJjn1HpSy4C&pg=PA1392019年10月11日閲覧. "The new kingdom of Castile had roughly tripled in size to some 335,000 square kilometers by 1300 but, at the same time, its population had increased by the same factor, from one to three millions [...] In the new Crown of Aragon of 120,000 square kilometers the population density would have been about the same for its numbers reached about 1,000,000 in the same period."
