APA (7th ed.) Citation

Filkin, D. (1997). Stephen Hawking's universe: The cosmos explained (1st. ed.). Harper Collins Pub.

Chicago Style (17th ed.) Citation

Filkin, David. Stephen Hawking's Universe: The Cosmos Explained. 1st. ed. New York, (N.Y.): Harper Collins Pub, 1997.

MLA (9th ed.) Citation

Filkin, David. Stephen Hawking's Universe: The Cosmos Explained. 1st. ed. Harper Collins Pub, 1997.