APA (7th ed.) Citation

Margulis, L., & Sagan, D. (1995). What is life? Simon & Schuster.

Chicago Style (17th ed.) Citation

Margulis, Lynn, and Dorion Sagan. What Is Life? New York [u.a.]: Simon & Schuster, 1995.

MLA (9th ed.) Citation

Margulis, Lynn, and Dorion Sagan. What Is Life? Simon & Schuster, 1995.