IBPS PO has the section Quantitative Aptitude, Reasoning, English, General Awareness and Computer Knowledge, You can refer the following books for the exam preparation:

Best Books for IBPS PO - Quantitative Aptitude

Quantitative Aptitude- R.S.Aggarwal

Quantitative Aptitude Test- N.K.Singh

The Complete Success Package – Bank PO- Arihant Publications

Best Books for IBPS PO - Reasoning

Guide to Banking General Awareness- R.Gupta

Manohar Pandey Book- Arihant Publications

Verbal- Non Verbal Reasoning- R.S. Aggrawal

Best Books for IBPS PO - English

Essential English Grammar- Murphy

General English- R.S.Aggarwal

Best Books for IBPS PO - General Awareness

Guide to Banking General Awareness- R.Gupta

Manohar Pandey Book- Arihant Publications

Best Books for IBPS PO - Computer Knowledge

Objective Computer Knowledge & Literacy- Kiran Publication

Computer Awareness- Arihant Publication

Good Luck!