Linking code that will not get a browser page of its own

I have a simple style sheet, "style.css" and some functions on a seperate sheet, "functions.php" and of course the required "connect.php."

Where and how do we link to the text of those sheets? The portfolio requirement says every page should have a link to its code, but the above pages does not ever display in the browser.

Regards

not sure of what exactly is the best way,
but what I did was have a linking page for any source code that did not have its own viewing page...

so I created a page that only hade labels and links on it so that the other source could be viewed

I decided to add another link on the index page.

My assignment done, was about to submit, but now I cannot read the submission document.... Only saved the tut letter with requirements.
Oh well.