Beiman, N. (2016) Animated performance: Bringing imaginary animal, human, and fantasy characters to life. Second edn. London; New York: Fairchild.

I found in this book some useful tips about the bouncing ball and about timing and spacing. It is very helpful since we are doing bouncing balls to understand those concepts. The book has some exercises to help us understand the concepts of movement and how to make it more believable.