Add the parties in a parenthetical

Error²Federal courts, Illinois courts21st and 22nd editions

A contentious case before the World Court names its countries in a parenthetical after the case name; an advisory opinion names no parties, and neither do the courts' own rules, acts and annual reports.¹

1. 1R. 21.5.1(b) Parties’ names; R. 21.5.1 The International Court of Justice and the Permanent Court of International Justice.
2. 2An error: the rule in note 1 allows one form, and this is not it.