Well, you know I had just 1/4th of the year to cover the 12 subjects, the only subject that consumed my precious hours was "criminology".I consulted oxford handbook, critical geography(that covers gigantic portion of crimes at state level, like Gen.Pinochet in Elsalvadorl), pdfs and lomborso for physical attributes of criminology.
Alhamdollilah, that covered the theories related to crime.(I just conceptualize and try to remember the theories with differences)
Note: every person has its sense of taste for reading and grabbing the central idea, if I'm not wrong than I already informed that" it doesn't matter, how many books have I studied, but definitely, it does how much i've retained".I.e. try to understand the idea and than develop rational CONCLUSION.
I hope it will work