1. 1. Manual on Total Productive Maintenance By Mr.J.Anjaneyulu, Confederation of Indian Industry (Southern Region) 1999.
   2. Material on World Wide Trends in Maintenance Management By Col SK Murthy & S.K. Vaish, Engineering Staff College of India, Hyderabad. 2002
   3. Total Quality Management Principles, Practice and Cases By Dr. D.D. Sharma, Sultan Chand & Sons, New Delhi. 2001.
   4. Manufacturing Organization and Management-VI Edition By Harold T. Amrine; John A. Ritchey; Colin L. Moodie & Joseph F. Kmec. Prentice Hall, Englewood Cliffs, New Jersey 07632
   5. Quality Planning and Analysis by J.M.Juran & Frank M.Gryna, Third Edition, Tata McGraw –Hill Publishing Company Ltd, New Delhi.
   6. Technical Manual - Wirtz Manufacturing Company Inc.
   7.  Allen Bradley & Siemens Drives Manuals.
   8. http://www.mfgenq.com
   9.  Battery Technology Handbook, Second Edition (Electrical and Computer Engineering) by H.A. Kiehne
   10. Battery Reference Book By Thomas P J Crompton.