Union Home Minister Amit Shah on Saturday released 12 reference books related to the recently enacted criminal justice laws and said the books have lucidly brought out changes made in the laws in a concise and simple manner. Hailing the publishers for the reference books on the three laws, Shah said the books also give case law commentaries for easy understanding. The three new laws -- the Bharatiya Nyaya Sanhita, the Bharatiya Nagarik Suraksha Sanhita and the Bharatiya Sakshya Act -- got Parliament's approval last week and the president gave her assent on December 25.PT