APA (7th ed.) Citation

Ikeda, D., & Inoue, Y. (1980). Letters of four seasons. Kodansha.

Chicago Style (17th ed.) Citation

Ikeda, Daisaku, and Yasushi Inoue. Letters of Four Seasons. Tokio: Kodansha, 1980.

MLA (9th ed.) Citation

Ikeda, Daisaku, and Yasushi Inoue. Letters of Four Seasons. Kodansha, 1980.