Kumar, K. (1978). Prophecy and progress: The sociology of industrial and post-industrial society. Penguin Books.
Lua i Stíl Chicago (17ú heag.)Kumar, Krishan. Prophecy and Progress: The Sociology of Industrial and Post-industrial Society. London: Penguin Books, 1978.
Lua MLA (9ú heag.)Kumar, Krishan. Prophecy and Progress: The Sociology of Industrial and Post-industrial Society. Penguin Books, 1978.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.