What are some good books that tell u how to besiege a castle?

Question

What are some good books that tell u how to besiege a castle?

Answer 1

Castle challenge by Julia Bruce

Answer 2

Julius Caesar's ‘Commentarii de Bello Gallico’ tells of his seige tactics against the hill fort of Alesia, although outnumbered, the Romans were able to build two walls, one to besiege Alesia and one to defend the legions from attack from relief forces.