How to insert multiple references?

 I’m using win X6 and I want to insert:

(Max et al., 2005; Max et al., 2007; Max et al., 2009; Max et al., 2012)

But when I try to do it this the list is not in chronologic order.

Can anyone explain how to do this to me?

The order of citations is handled by the output style you have selected.  Many are set to order the same as the Bibliography (which usually includes co-authors to order), but you should be able edit the style to change this.  Check with your publication guidelines to see what is the correct order though.  If you need help, attach the current output style you are using, and one of us other users might be able to help.  

Got it thanks a million