References

Books
WEBSTER, Chris. Animation; the mechanics of motion Focal Press; 1st Ed. 2005
WELLS, Paul. Fundamentals of animation AVA publishing; 1st ed. 2006
LASSETER, John. Timing for Animation 1981 Focal Press; 9th ed. Oxford 2005
ROBERTS, Steve. Character animation in 3D Focal Press; 2nd ed. Oxford 2005
WELLS, Paul. Understanding animation, Routledge; 12th ed. 2010
STANCHFIELD, Walt. Drawn to Life, Focal press; 1st ed. 2010
WILLIAMS, Richard. The animators Survival Kit Faber and Faber; 2nd ed. 2006

Websites
http://craigbowman.com/animation/principles-of-animation-part-iii
http://en.wikipedia.org/wiki/12_basic_principles_of_animation#Solid_drawing
http://www.dgp.toronto.edu/~karan/courses/csc2529/principles.pdf
http://craigbowman.com/animation/principles-of-animation-part-ii

Film