The 1987 Philippine Constitution
It's the most recent Constitution of the Philippines.
The title says it all. This book contains special penal laws, different special cases regarding the creation of some laws and if I have the time, their explanation.
The Revised Penal Code of the Philippines for law students and future criminologists.
Methods prescribed by law for the apprehension and prosecution of persons accused of any criminal offenses and for their punishment, in case of conviction. These procedures could be found under the Rules of Court.