I've done MBA (Finance) and will appear in CE-2013 InshaAllah...

My optional subjects are

Public Administration
Sociology
International Relations
Journalism
Muslim Law & Jurisprudence
History of USA

I've already started my preparation from Islamiat along with essay. Although, I've not purchased any reference book yet and wholy rely on internet so far. Please any one who opted one or more of mine subjects, please share useful books which can help me in my preparation.

Thanks.