Παραπομπή APA

Narlikar,, J. V. (1991). Frontier between physics and astronomy (1st.). Macmillan.

Παραπομπή Chicago Style

Narlikar,, Jayant V. Frontier Between Physics and Astronomy. 1st. New Delhi: Macmillan, 1991.

Παραπομπή MLA

Narlikar,, Jayant V. Frontier Between Physics and Astronomy. 1st. Macmillan, 1991.