APA (7th ed.) Citation

Einstein, A., Nathan, O., & Norden, H. (1968). Einstein on peace. Schocken Books.

Chicago Style (17th ed.) Citation

Einstein, Albert, Otto Nathan, and Heinz Norden. Einstein on Peace. New York: Schocken Books, 1968.

MLA (9th ed.) Citation

Einstein, Albert, et al. Einstein on Peace. Schocken Books, 1968.