APA استشهاد

Narlikar, J. V. (1993). Introduction to cosmology (2nd , 3rd ed.). Foundation Books.

استشهاد بنمط شيكاغو

Narlikar, Jayant V. Introduction to Cosmology. 2nd , 3rd ed. New Delhi: Foundation Books, 1993.

MLA استشهاد

Narlikar, Jayant V. Introduction to Cosmology. 2nd , 3rd ed. Foundation Books, 1993.