Google Adwords refering URL

When I review logs, how would I recognize Adwords traffic from natural searchs from Google? I see refering URL's including googlesyndication and other containg the various Google's like Google.com, Google.au, etc. I assume the syndication referals are Google Adsense ads on publisher sites. Do I also assume these are the ads that Google runs on their search result pages? Do the search page ads also show as googlesyndication?

 

Any feedback anyone?

Thanks.

 

The best way is to change your url to include www.yoursite.com/example.html?yourtrackinginfo