Hills, R. L. (1994). Power from wind: A history of windmill technology. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Hills, Richard Leslie. Power from Wind: A History of Windmill Technology. Cambridge [England]: Cambridge University Press, 1994.
Lua MLA (9ú heag.)Hills, Richard Leslie. Power from Wind: A History of Windmill Technology. Cambridge University Press, 1994.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.