Remove the comma between subdivisions

Error²Federal courts, Illinois courts21st and 22nd editions

An Australian citation runs its subdivisions together on a space, not a comma; a comma belongs only where two references list the same kind of subdivision.¹

1. 1T2.2 Australia. Tables: R. 20.1 Jurisdiction; T10.3 Countries and Regions.
2. 2An error: the rule in note 1 allows one form, and this is not it.