Παραπομπή APA

Sarma, . K. V. A. (1990). Observational astronomy in India.

Παραπομπή Chicago Style

Sarma, K V; Author. Observational Astronomy in India. Thenjippalam, University of Calicut, 1990.

Παραπομπή MLA

Sarma, K V; Author. Observational Astronomy in India. 1990.