Having trouble entering more than one author

I have multiple authors to my references but in the bibliography its merging them :  Cameron, P. J., A. McCarthy, S.

when it should really be three peoples names:  Cameron, P. Joseph, A. McCarthy, S…

What am I doing wrong?

you should put each name on a separate line in the record.  

Surname, A
Surname, B

Surname, C

Think Leanne has provided a solution to that. Was also having problems with it