Go to the text format settings and enable the filter.
From now on you can use tokens in textfields.
The result. I added three fields together in one field..Hide the other fields..
Where can you find the tokens. Go to Help = > Token. Yes... the Help tab is usefull..
Even with reference fields one can reference to fields from another content type.
I have a content type 'paintings' with reference field 'painters'. This content type has a name and an image field of the painter.
So i can show the image field of the painter in the node of the painting.
Look for the token in the Help tab.
You can also switch to the source code and add some CSS classes.