What are types of material sources of law ?

Answer 

There are two types of material sources of law are as follows: 

1) Legal

2) Historical Sources

1) Legal Sources of law :

                It includes Legislation, precedent, custom recognised by courts, agreements, conventions and treaties.

2) Historical Sources of law :

                 These types of sources are unauthoritative.  They are Sources but they have no legal recognition. 

Examples : Juristic writing, foreign decisions and numerous other things from which a judge derives help in shaping his judgement. 

Historical Sources are also two types 1) religious and moral 2) literary Sources of Law.