Iueda D. 1., Inoue Y. & Gage R. L. (1980). Letters of four seasons. Tokyo: Kodansha International.
Iueda Daisaku 1928, Inoue Yanishi and Gage Richard L. 1980. Letters of four seasons. Tokyo: Kodansha International.
Iueda D. 1., Inoue Y. and Gage R. L. (1980). Letters of four seasons. Tokyo: Kodansha International.
Iueda Daisaku 1928, Inoue Yanishi and Gage Richard L. Letters of four seasons. Tokyo: Kodansha International. 1980.
