Government of India. (1959). The national sample survey: Some characteristics of the economically active population. Government of India.
Lua i Stíl Chicago (17ú heag.)Government of India. The National Sample Survey: Some Characteristics of the Economically Active Population. New Delhi: Government of India, 1959.
Lua MLA (9ú heag.)Government of India. The National Sample Survey: Some Characteristics of the Economically Active Population. Government of India, 1959.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.