Tohutoro APA (7th ed.)

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

Tohutoru Kātū Chicago (17th ed.)

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

Tohutoro MLA (9th ed.)

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