APA (7th ed.) Citation

Cartan, E., Einstein, A., & Debever, R. (1979). Elie Cartan-Albert Einstein: Letters on absolute parallelism, 1929-1932. Princeton University Press.

Chicago Style (17th ed.) Citation

Cartan, Elie, Albert Einstein, and Robert Debever. Elie Cartan-Albert Einstein: Letters on Absolute Parallelism, 1929-1932. [Princeton]: Princeton University Press, 1979.

MLA (9th ed.) Citation

Cartan, Elie, et al. Elie Cartan-Albert Einstein: Letters on Absolute Parallelism, 1929-1932. Princeton University Press, 1979.