I need a reference for job in mechanical field. I am graduated in 2017 with 78%. Searched for a job a lot but everyone asking reference. Please help me

@Noor  - I doubt references really work in current job scenario. However, if you want a reference, the best place to ask it would be -

1. An employee of the company you are applying to.

2. Your college alumni network. Check with your seniors if they can refer you to any job in their organisations. 

All the best!