Tham khảo Máy_cơ_đơn_giản

  1. ↑ Chambers, Ephraim (1728), “Table of Mechanicks”, Cyclopædia, A Useful Dictionary of Arts and Sciences (London, England), Volume 2: 528, Plate 11 .
  2. ↑ Paul, Akshoy; Roy, Pijush; Mukherjee, Sanchayan (2005), Mechanical sciences: engineering mechanics and strength of materials, Prentice Hall of India, tr. 215, ISBN 978-81-203-2611-8. 
  3. 1 2 3 Asimov, Isaac (1988), Understanding Physics, New York: Barnes & Noble, tr. 88, ISBN 978-0-88029-251-1. 
  4. ↑ Anderson, William Ballantyne (1914). Physics for Technical Students: Mechanics and Heat. New York: McGraw Hill. tr. 112–22. Truy cập ngày 11 tháng 5 năm 2008. 
  5. ↑ Compound machines, University of Virginia Physics Department, truy cập ngày 11 tháng 6 năm 2010. 
  6. ↑ Usher, Abbott Payson (1988). A History of Mechanical Inventions. US: Courier Dover Publications. tr. 98. ISBN 978-0-486-25593-4. 
  7. ↑ Wallenstein, Andrew (tháng 6 năm 2002). “Foundations of cognitive support: Toward abstract patterns of usefulness”. Proceedings of the 9th Annual Workshop on the Design, Specification, and Verification of Interactive Systems. Springer. tr. 136. Truy cập ngày 21 tháng 5 năm 2008. 
  8. ↑ Chiu, Y.C. (2010), An introduction to the History of Project Management, Delft: Eburon Academic Publishers, tr. 42, ISBN 978-90-5972-437-2 
  9. ↑ Câu nói bởi en:Pappus of Alexandria trong Synagoge, quyển VIII
  10. ↑ Rao, S.; Durgaiah, R. (2005). Engineering Mechanics. Universities Press. tr. 80. ISBN 978-81-7371-543-3. 
  11. ↑ Goyal, M.C.; Raghuvanshee, G.S. (2011). Engineering Mechanics. PHI Learning. tr. 212. ISBN 978-81-203-4327-6. 
  12. ↑ Avison, John (2014). The World of Physics. Nelson Thornes. tr. 110. ISBN 978-0-17-438733-6. 
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