Justifying reference list and change reference list title size


I have currently two problems with my Reference manager:

The first question is how can I justify my reference list?  I tried justifying after editing but when something is changing in my reference list, it is returning back to the left and I have to justify it again, and again and again.  Is it possible to enter it somehow in the reference list output?

My second problem is the size of the reference title which is the same as the reference list itself and I would like to get it in bold or bigger as the reference list itself.  Again, when I add a citation, it is returning to normal…

Thanks in advance for your help,