APA (7th ed.) Citation

Terzian, Y., & Bilson, E. (1997). Carl Sagan's universe. Cambridge University Press.

Chicago Style (17th ed.) Citation

Terzian, Yervant, and Elizabeth Bilson. Carl Sagan's Universe. Cambridge: Cambridge University Press, 1997.

MLA (9th ed.) Citation

Terzian, Yervant, and Elizabeth Bilson. Carl Sagan's Universe. Cambridge University Press, 1997.