APA (7th ed.) Citation

John, D. (2007). Astronomy: The definitive guide to the universe. Parragon.

Chicago Style (17th ed.) Citation

John, Duncan. Astronomy: The Definitive Guide to the Universe. Bath: Parragon, 2007.

MLA (9th ed.) Citation

John, Duncan. Astronomy: The Definitive Guide to the Universe. Parragon, 2007.

Warning: These citations may not always be 100% accurate.