Analysis of information sources in references of the Wikipedia article "Kuroda Nagamasa" in English language version.
"朝日日本歴史人物事典" (Asahi Encyclopedia of Japanese Historical Figures); Rekishi Gunzo Editorial Department, "戦国時代人物事典 / Encyclopedia of Sengoku Jidai Jijinbutsu", Gakken Publishing, 2009; Watanabe Daimon, "黒田官兵衛・長政の野望 もう一つの関ケ原 / Kuroda Kanbei: Nagamasa's Ambition: Another Sekigahara," Kadokawa, 2013.