Niigata-shi (Japan). Gappei Chōsonshi Henshūshitsu

• Ishiyama sonpō
• Niigata nichinichi shinbun, Niigata nippō
• Niigata shinbun
• Niigata shinbun, Niigata mainichi shinbun
• Niigata-shi gappei chōson no rekishi