Question

Which book has proposed of division of power within government

Answer 1

The constitution
Moreover the judiciary is an organ of government that keeps a check on the power of the other organs -legislature and executive so that they do not take over absolute power and become a dictator .
Also all the power keeps a check on each other

Answer 2

In the spirit of the laws Montesquieu proposed of division of power within government between the legislative the executive and the judiciary