Shrivastava, O. S. (1994). Demography and population studies (2nd rev. ed.). Vikas Pub. House.
Lua i Stíl Chicago (17ú heag.)Shrivastava, O. S. Demography and Population Studies. 2nd rev. ed. New Delhi: Vikas Pub. House, 1994.
Lua MLA (8ú heag.)Shrivastava, O. S. Demography and Population Studies. 2nd rev. ed. Vikas Pub. House, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.