“EUR-Lex - 41981X0919 - EN”. Official Journal C 241, 19/09/1981, p. 0001–0007; Spanish special edition: Chapter 01, Volume 3, p. 0087; Portuguese special edition, Chapter 01, Volume 3, p. 0087. 2021年4月20日閲覧。
Regulation (EU) 2016/399 of the European Parliament and of the Council of 9 March 2016 on a Union Code on the rules governing the movement of persons across borders (Schengen Borders Code), Article 11 (OJ L 77, 23 March 2016, p. 1–52)
Article 5(4) of the Citizens' Rights Directive 2004/38/EC (L 158, pp. 77–123)