94. Where the holder of a real estate broker’s or agent’s certificate uses the mandatory form entitled “Annex A — Immovable”, “Annex G — General”, “Counter-Proposal to a Promise to Purchase” or “Amendments and Notice of Fulfilment of Conditions”, he shall indicate, in the space reserved for that purpose, the number of the mandatory form entitled “Exclusive Brokerage Contract — Sale of a Chiefly Residential Immovable”, “Non-Exclusive Brokerage Contract — Sale of a Chiefly Residential Immovable” or “Promise to Purchase”, as the case may be, to which reference is made.