art_4__para_4
4. When Member States adopt the measures referred to in paragraph 1, they shall contain a reference to this Directive or shall be accompanied by such a reference on the occasion of their official publication. The methods of making such reference shall be laid down by Member States.
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Source: EUR-Lex (Cellar) · retrieved 2026-10-14 · Text as adopted (Official Journal); later amendments are not incorporated in this text.