Ram Avtar. (1971). Lectures on labour problems & social welfare in India. New Academic Pub. Co.
Lua i Stíl Chicago (17ú heag.)Ram Avtar. Lectures on Labour Problems & Social Welfare in India. Jullundur: New Academic Pub. Co, 1971.
Lua MLA (8ú heag.)Ram Avtar. Lectures on Labour Problems & Social Welfare in India. New Academic Pub. Co, 1971.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.