APA Citation

Sagan, C., Dubos, R., Margenau, H., Snow, C., Leonard, J. N., & Cousteau, F. (1967). Les planètes. [Francia?]: Time.

Chicago Style Citation

Sagan, Carl, René Dubos, Henry Margenau, C.P. Snow, Jonathan Norton Leonard, and Françoise Cousteau. Les Planètes. [Francia?]: Time, 1967.

MLA Citation

Sagan, Carl, et al. Les Planètes. [Francia?]: Time, 1967.

Warning: These citations may not always be 100% accurate.