Shorten the author to the surname

Warning²Federal courts, Illinois courts21st and 22nd editions

A web source's short form uses the author's last name, not the whole name given in the full citation; an institutional author keeps its full name.¹

1. 1R. 18.12(a) Internet; R. 18.9(a) Internet. Tables: R. 4.2(a) “Supra.”; R. 18.2.1 General Internet Citation Principles.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.