Karnik, V. B. (1978). Indian trade unions: A survey (3d rev. ed.). Popular Prakashan.
Lua i Stíl Chicago (17ú heag.)Karnik, V. B. Indian Trade Unions: A Survey. 3d rev. ed. Bombay: Popular Prakashan, 1978.
Lua MLA (8ú heag.)Karnik, V. B. Indian Trade Unions: A Survey. 3d rev. ed. Popular Prakashan, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.