Cita APA (7th ed.)

Peccei, A., Ikeda, D., & Gage, R. L. (1984). Before it is too late. Kodansha International.

Cita Chicago (17th ed.)

Peccei, Aurelio, Daisaku Ikeda, i Richard L. Gage. Before It Is Too Late. Tokyo: Kodansha International, 1984.

Cita MLA (9th ed.)

Peccei, Aurelio, et al. Before It Is Too Late. Kodansha International, 1984.