Research shows that using credible references improves academic results $($Brown$,2020$a$,2020$b$).$

Which of the following is correct?

A$.$

There is no need to reference this statement

B$.$

There should be an initial and full stop after the name

C$.$

The dates should not have an $$a$$ and $$b$$ next to them

D$.$

The referencing is correct