طاحونة هوائية - المعرفة
Science and Civilization in China: Volume 4, Physics and Physical Technology, Part 2, Mechanical Engineering. Taipei: Caves Books Ltd. Hugh Pembroke Vowles: "An Enquiry into Origins of the Windmill", Journal of the Newcomen Society, Vol. 11 (1930-31) Roy Gregory and Laurence Turner (2009) Windmills of Yorkshire ISBN 9781840334753