It seems like both of the styles are messed up; the APA style should have all the references within the same citation. To achieve this, place your cursor in the first citation and click “Edit”. Then use the search box in the Add/Edit dialog to add the subsequent references to the same citation (they will each appear as blue bubbles in the dialog). After all the references have been added to the first citations, you can delete the subsequent citations.
It seems like you have already done this in the third citation, which contains two references.