Use the full citation, not a short form

Warning²Federal courts, Illinois courts21st and 22nd editions

A work reprinted in a collection is cited in full first, with the reprint volume appended to it; a short form in that slot leaves the reader with no publication data for the original.¹

1. 1R. 15.5.2(a) Documents originally published; R. 15.5.2 Collected Documents. Tables: R. 1.6(a)(ii) “Reprinted in.”; R. 4.2(a) “Supra.”.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.