Putting apostrophes around a string

Hi,

I'm putting together a string using this code snippet:
<xsl:value-of select="concat('Entering state: ',$sname)" />

Now, I would like to change the string by putting apostrophes around
it so that the output is
'Entering state: name'

Is it possible to do this and, in that case, how? I've tried with
apostrophe and &apos; but didn't manage to get it to work in any of
the different ways I used it.
I'm using XSLT 1.0.

Sincerely,
Anna