Use the source’s printed abbreviation

Error²Federal courts, Illinois courts21st and 22nd editions

A treaty source written out in full, or written without the periods the table of treaty sources prints, in the source slot of a treaty citation.¹

1. 1R. 21.4.5 Treaty Sources; T4 Treaty Sources.
2. 2An error: the rule in note 1 allows one form, and this is not it.