Narlikar, J. V. (2002). An introduction to cosmology (3rd ed.). Cambridge University Press.

Narlikar, Jayant Vishnu. An Introduction to Cosmology. 3rd ed. Cambridge, UK ; New York, NY: Cambridge University Press, 2002.

Narlikar, Jayant Vishnu. An Introduction to Cosmology. 3rd ed. Cambridge University Press, 2002.