Παραπομπή APA

Research ,Reference And Training Division. (1981). India 1981 - A Reference Annual.

Παραπομπή Chicago Style

Research ,Reference And Training Division. India 1981 - A Reference Annual. Publication Division ., Govt. Of India, 1981.

Παραπομπή MLA

Research ,Reference And Training Division. India 1981 - A Reference Annual. 1981.