Is it possible to get source data?

Is it possible to get source data? I'd like to see where my submissions come from (paid search, facebook, etc).

I am not sure if I understood your question correctly. If you embedded your form on multiple webpages and you want to know from which webpage are your submissions coming from, you can use Get Form Page URL widget. 

Capture the Page URL Where the Form is Embedded

If you want to find out who referred your users to your form, you can use Get Referrer widget.