Παραπομπή APA

Bhatnagar, P. P. (1967). Census of India <1961>: Uttar Pradesh.

Παραπομπή Chicago Style

Bhatnagar, P P. Census of India <1961>: Uttar Pradesh. 1967.

Παραπομπή MLA

Bhatnagar, P P. Census of India <1961>: Uttar Pradesh. 1967.