Chicago
Memoranda https://www.govinfo.gov/app/details/USREPORTS-106/USREPORTS-106-FrontMatter-4.
APA
Memoranda https://www.govinfo.gov/app/details/USREPORTS-106/USREPORTS-106-FrontMatter-4.
MLA
Memoranda. https://www.govinfo.gov/app/details/USREPORTS-106/USREPORTS-106-FrontMatter-4.
Bluebook
Memoranda.