18. A psychologist shall post in his waiting room a copy of the Code of ethics of psychologists (chapter C-26, r. 212), a copy of this Regulation and, where a psychologist charges his clients fees, a copy of the Regulation respecting the procedure for conciliation and arbitration of the accounts of psychologists (chapter C-26, r. 220). He shall also write the address of the Order on the copy of each of those regulations.