dear linbin,
I agree with bobby on the subject of the book motor control.
The 2 "new" theories motor development are wel documented. Attached a document I wrote about all the theories of motor development including some liturature. If you need more, try googling all the names and you will find a lot of information gratis.
A book about posture control ( written by authors like Mijna Hadders-Algra, Eva Bower + others) is in press at the moment. Should make very interesting reading.
good luck, hope this helps
In Holland, we are trying to understand and implement both "theories". Keeping in mind that they are hypothesis and they can be "used" together.
esther de ru