Ellis, Robert Richmond (2003). "'The Best Thus Far Discovered': The Japanese in the Letters of Francisco Xavier". Hispanic Review. 71 (2): 155–169. doi:10.2307/3247185. ISSN0018-2176. JSTOR3247185.
Silva Ehalt, Rômulo da. "Suspicion and Repression: Ming China, Tokugawa Japan, and the End of the Japanese-European Slave Trade (1614–1635)". Slavery and Bondage in Asia, 1550–1850: Towards a Global History of Coerced Labour, edited by Kate Ekama, Lisa Hellman and Matthias van Rossum, Berlin, Boston: De Gruyter, 2022, pp. 213-230. https://doi.org/10.1515/9783110777246-012, p.217, "In spite of this assertion, the fact is that the Japanese-European slave trade continued for a number of years beyond this date.7"
Silva Ehalt, Rômulo da. "Suspicion and Repression: Ming China, Tokugawa Japan, and the End of the Japanese-European Slave Trade (1614–1635)". Slavery and Bondage in Asia, 1550–1850: Towards a Global History of Coerced Labour, edited by Kate Ekama, Lisa Hellman and Matthias van Rossum, Berlin, Boston: De Gruyter, 2022, pp. 213-230. https://doi.org/10.1515/9783110777246-012, p.215, "Despite showing the continuity of Japanese slavery, Sousa insists on the importance of the 1607 Portuguese law for the end of the trade. Lúcio de Sousa, Escravatura e Diáspora Japonesa nos Séculos XVI e XVII (Braga: NICPRI, 2014): 156–61; Sousa, The Portuguese Slave Trade: 426, 538, 542. As for numbers, for instance, the presence of Japanese individuals in Mexico City seems to have increased sharply after 1617, while records of Asians spread throughout the world suggest that there were enslaved or formerly enslaved Japanese in the Americas until the late seventeenth century. Out of the 35 Japanese Oropeza Keresey lists as living in Mexico City in the sixteenth and seventeenth centuries, only four arrived prior to 1617. Sousa's lists of 28 Japanese individuals spread around the globe between 1599 and 1642, which he claims to have been enslaved, suggests a similar pattern. Sousa, The Portuguese Slave Trade: 210–59; Deborah Oropeza Keresey, "Los 'indios chinos' en la Nueva España: la inmigración de la nao de China, 1565–1700" (PhD diss., El Colégio de México, 2007): 257–91"
Ellis, Robert Richmond (2003). "'The Best Thus Far Discovered': The Japanese in the Letters of Francisco Xavier". Hispanic Review. 71 (2): 155–169. doi:10.2307/3247185. ISSN0018-2176. JSTOR3247185.
Ellis, Robert Richmond. "The Best Thus Far Discovered": The Japanese in the Letters of St. Francisco Xavier. Hispanic Review, Vol. 71 No. 2 (Spring 2003), pp. 155-169 University of Pennsylvania Press. 30 November 2008 jstor
Ellis, Robert Richmond (2003). "'The Best Thus Far Discovered': The Japanese in the Letters of Francisco Xavier". Hispanic Review. 71 (2): 155–169. doi:10.2307/3247185. ISSN0018-2176. JSTOR3247185.
