Add the volume or remove the year

Error²Federal courts, Illinois courts21st and 22nd editions

The two international law digests are cited by volume, reporter and page, and neither ever used a four-digit volume; a year in the volume slot is a date, not a locator.¹

1. 1R. 21.5.8 Other International Courts; R. 21.5 International Law Cases.
2. 2An error: the rule in note 1 allows one form, and this is not it.