Display meta data in blogs

Hi,

Just wanted to understand if I there is an option to display a custom meta data that is added to posts? I am importing a couple of feeds (as default WordPress post) that I am adding to my blogs. For the imported feeds (as posts), I need to display the source of the feed. However, I do not see an option under customize theme an to enable this new meta data. Can you please provide any pointer?

Warm regard,
Aravind Anand