APA (7th ed.) Citation

Sobel, D. (2005). The planets. Harper Perennial Publishers.

Chicago Style (17th ed.) Citation

Sobel, Dava. The Planets. London: Harper Perennial Publishers, 2005.

MLA (9th ed.) Citation

Sobel, Dava. The Planets. Harper Perennial Publishers, 2005.

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