Add the volume or remove the year

Error²Federal courts, Illinois courts21st and 22nd editions

A periodical citation gives a volume number before its name, or, where it numbers no volumes, the year of publication there instead with no year parenthetical after it. This citation gives neither.¹

1. 1R. 16.4 Consecutively Paginated Journals; B16.1.1 Consecutively Paginated Journals. Tables: R. 16.5 Nonconsecutively Paginated Journals and Magazines.
2. 2An error: the rule in note 1 allows one form, and this is not it.