APA aipamena

India. Director of Census Operations, Punjab. (2001). Census of India, 1991. Directorate of Census Operations, Punjab.

Chicago Style aipamena

India. Director of Census Operations, Punjab. Census of India, 1991. [Punjab]: Directorate of Census Operations, Punjab, 2001.

MLA aipamena

India. Director of Census Operations, Punjab. Census of India, 1991. Directorate of Census Operations, Punjab, 2001.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.