India. Vital Statistics Division. (1970). Sample registration system. Vital Statistics Division, Office of the Registrar General, India, Ministry of Home Affairs.
Chicago-viite (17. p.)India. Vital Statistics Division. Sample Registration System. New Delhi: Vital Statistics Division, Office of the Registrar General, India, Ministry of Home Affairs, 1970.
MLA-viite (8. p.)India. Vital Statistics Division. Sample Registration System. Vital Statistics Division, Office of the Registrar General, India, Ministry of Home Affairs, 1970.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.