Rujukan Daya memusat

  1. ↑ Russelkl C Hibbeler (2009). "Equations of Motion: Normal and tangential coordinates". Engineering Mechanics: Dynamics (ed. 12). Prentice Hall. m/s. 131. ISBN 0136077919.
  2. ↑ Paul Allen Tipler, Gene Mosca (2003). Physics for scientists and engineers (ed. 5th). Macmillan. m/s. 129. ISBN 0716783398.
  3. ↑ Felix Klein, Arnold Sommerfeld (2008). The Theory of the Top (ed. Reprint with translators' notes of 1897). Boston, Mass.: Birkhäuser. m/s. 232. ISBN 0817647201.
  4. ↑ Chris Carter (2001). Facts and Practice for A-Level: Physics. S.l.: Oxford Univ Press. m/s. 30. ISBN 9780199147687.
  5. ↑ Eugene Lommel and George William Myers (1900). Experimental physics. K. Paul, Trench, Trübner & Co. m/s. 63.