Senarai rujukan : ( 02 Mei 2011 – 07 mei 2011) – perbincangan :

  1. A. Neil (2002)   An Essential Guide To The Mysteries Of Modern Science : Energy & Forces. The Young Oxford Library of Science
  2. (2005)   Solar Energy : Power From The Sun. Gratian Vas
  3. (2005)   Motion, Forces & Energy. National Geography, MC Graw Hill
  4. Brown Watson (2000)   The Big Book Of Experiments : An Encyclopedia Of Science. England
  5. Paul W. Zitzewitz (2002)   Physics : Principles & Problems. Glencoe, MC Graw Hill, Columbus, Ohio
  6. Sally Morgan (2002)   Alternative Energy Sources : Science At The Edge. Heinemann Library
  7. John Farndon  (2000)   Science Experiments : Buoyancy. Federal Publications, New York, USA