Chicago
Prefatory Note https://www.govinfo.gov/app/details/USREPORTS-67/USREPORTS-67-FrontMatter-5.
APA
Prefatory Note https://www.govinfo.gov/app/details/USREPORTS-67/USREPORTS-67-FrontMatter-5.
MLA
Prefatory Note. https://www.govinfo.gov/app/details/USREPORTS-67/USREPORTS-67-FrontMatter-5.
Bluebook
Prefatory Note.