Snooks, G. D. (1994). Was the Industrial Revolution necessary? Routledge.
Lua i Stíl Chicago (17ú heag.)Snooks, G. D. Was the Industrial Revolution Necessary? London ; New York: Routledge, 1994.
Lua MLA (8ú heag.)Snooks, G. D. Was the Industrial Revolution Necessary? Routledge, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.