French to English Law/Patents Law: Contract(s)

An organisation is considering a change to its internal rules, and wants to include a 'visa de reference' to its founding agreement, which stipulates that....

I know in a legal context 'visa' can be translated as 'citation', 'endorsement' or even 'stamp', but my feeling is that 'visa de référence' in my context could just be translated as reference, i.e. we want to include a reference to our founding agreement, which stipulates that...

Here's the text in French (anonymised):

Nous proposons d'inclure un visa de référence à l’accord du [DATE] qui prévoit que...