APA (7th ed.) Citation

Liddle, A. R., & Loveday, J. (2008). The Oxford companion to cosmology. Oxford University Press.

Chicago Style (17th ed.) Citation

Liddle, Andrew R., and Jon Loveday. The Oxford Companion to Cosmology. Oxford ; New York: Oxford University Press, 2008.

MLA (8th ed.) Citation

Liddle, Andrew R., and Jon Loveday. The Oxford Companion to Cosmology. Oxford University Press, 2008.