- Cesare Polenghi, Samurai of Ayutthaya: Yamada Nagamasa, Japanese warrior and merchant in early seventeenth-century Siam. Bangkok: White Lotus Press (2009), 7.
- Capt. J.M. James, “A Short Narrative of Foreign Travel of Modern Japanese Adventurers,” Transactions of the Asiatic Society of Japan, vol. VII (1879), 196-210.