Add the state in a parenthetical

Warning²Federal courts, Illinois courts21st and 22nd editions

A state legislative report names its state, abbreviated, in a parenthetical, unless the title or the author printed in the citation already names it.¹

1. 1R. 13.4(f) State materials. Tables: T10 Geographical Terms.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.