एपीए उद्धरण

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

शिकागो स्टाइल उद्धरण

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

एमएलए उद्धरण

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