"沿革". 横浜ゴム株式会社/The Yokohama Rubber Co., Ltd. Archived from the original on February 3, 2024, "Company History". The Yokohama Rubber Co., Ltd. Archived from the original on January 16, 2024.
"沿革". 横浜ゴム株式会社/The Yokohama Rubber Co., Ltd. Archived from the original on February 3, 2024, "Company History". The Yokohama Rubber Co., Ltd. Archived from the original on January 16, 2024.