One thing you could do is post the following in the code of your mod:
"EXHIBIT A -Mozilla Public License.
``The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
http://www.mozilla.org/MPL/
Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
ANY KIND, either express or implied. See the License for the specificlanguage governing rights and
limitations under the License.
The Original Code is ______________________________________.
The Initial Developer of the Original Code is ________________________. Portions created by
______________________ are Copyright (C) ______ _______________________. All Rights
Reserved.
Contributor(s): ______________________________________.
Alternatively, the contents of this file may be used under the terms of the _____ license (the [___] License), in which case the provisions of [______] License are applicable instead of those above. If you wish to allow use of your version of this file only under the terms of the [____] License and not to allow others to use your version of this file under the MPL, indicate your decision by deleting the provisions above and replace them with the notice and other provisions required by the [___] License. If you do not delete the provisions above, a recipient may use your version of this file under either the MPL or the [___] License."
[NOTE: The text of this Exhibit A may differ slightly from the text of the notices in the Source Code files of the Original Code. You should use the text of this Exhibit A rather than the text found in the Original Code Source Code for Your Modifications.]"
Found this at
http://www.opensource.org/licenses/mozilla1.1.php
It seems that you don't need to list the whole license. Merely naming the license (with a paragraph such as the one above, given at the end of the license as an example) invokes 'the' terms of 'the' license (which is maintained at the listed url,
http://www.mozilla.org/MPL/.
If you look at the first page I listed, you will see a large number of licenses that you can use/cite. I suggested the Mozilla license because the initial page I went to,
http://www.opensource.org/licenses/index.php, claimed that the Mozilla license has become widely used. I assume that the GPL and other licenses are still popular too.