^Encyclopædia Britannica. "John IV (king of Portugal)". مؤرشف من الأصل في 2014-10-09. king of Portugal from 1640 as a result of the national revolution, or restoration, which ended 60 years of Spanish rule.
^Paul، Hardacre (1960). The English Contingent in Portugal, 1662–1668, Journal of the Society for Army Historical Research, volume 38. ص. 112–125.