Use small caps for the author

Warning²Law reviews21st and 22nd editions

A short form takes the faces its full citation takes, so the surname in a book’s “supra” form keeps the small caps a book’s author is given in full; a periodical’s author stays plain.¹

1. 1R. 2.2(b)(ii) All other authorities. Tables: R. 4.2 “Supra” and “Hereinafter”; R. 15.1 Author.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.