APA (7th ed.) Citation

Sagan, C. (1994). Pale blue dot: A vision of the human future in space. Random House.

Chicago Style (17th ed.) Citation

Sagan, Carl. Pale Blue Dot: A Vision of the Human Future in Space. New York: Random House, 1994.

MLA (9th ed.) Citation

Sagan, Carl. Pale Blue Dot: A Vision of the Human Future in Space. Random House, 1994.