Remove the volume or the cover date

Error²Federal courts, Illinois courts21st and 22nd editions

A periodical citation cites a work by volume and first page, or by its cover date, but never both; a volume standing beside a cover date mixes the two accepted forms.¹

1. 1R. 16.5 Nonconsecutively Paginated Journals and Magazines; R. 16.4 Consecutively Paginated Journals; B16.1.1 Consecutively Paginated Journals. Tables: B16.1.2 Nonconsecutively Paginated Journals and Magazines.
2. 2An error: the rule in note 1 allows one form, and this is not it.