Add the web address

Warning²Federal courts, Illinois courts21st and 22nd editions

A European Court report with no print version is cited to Curia, the Court's own site; with no volume and page to fall back on, the web address is all the citation has.¹

1. 1R. 21.5.2(a) Official reports; R. 21.5.2 European Union Courts.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.