integrating different Adwords campaign with the same landing page

Hey,
I would like to use the campaign report but the problem is i have different campaigns with different ad groups, all of which lead to the same landing and thank you page.

how can I differentiate between the different campaigns?

thanks!

Use the utm_campaign= option in your URLs in Adwords.

So www.domain.com/landingpage/?utmcampaign=adwordscampaign