Shorten the authors to the first and “et al.”

Warning²Federal courts, Illinois courts21st and 22nd editions

A “supra” for a work with three or more authors names the first author followed by “et al.” — “Fallon et al., supra note 1” — and does not spell out the others.¹

1. 1R. 15.1(b) More than three authors; B15.1 Full Citation.
2. 2A warning: the form is usually wrong under the rule in note 1, and context can justify it.