LaTeX.org

I finally found the right style for my citations, the harvard style.
But my problem is now when I try to make mulitple citations, I can't add the pagenumbers for all of them.
I need it to look like that:
(e.g. McFarland, Challagalla, Shervani, 2006, p.112; Ahearne, Gruen, Jarvis, 1999, p.278)

The ...