— 391 L 0542: Council Directive 91/542/EEC of 1 October 1991 (OJ No L 295, 25.10.1991, p. 1).
— 391 L 0542:Treoir 91/542/CEE ón gComhairle an 1 Deireadh Fómhair 1991 (IO Uimh L 295, 25.10.1991, Ich. 1).