Governing the ungovernable by Ishrat Hussain. Go through this book too. You can get it from Oxford university press shops or from their offices. It's an awesome book. I used it for PMS interview and this book is quite interesting. You can use it as a reference book. There are lot of case studies,reseaches and opinions of different think tanks in it , that you can use in public administration paper. Hope it helps.

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''Sufficient for us is Allah , and He is the best Disposer of affairs" Al-Quran